Multi-Part Lesson
1-3
Apply Percents
PART
A
Main Idea
Apply percents to find
discount, markup, and
sales tax.
NGSSS
MA.8.A.6.4 Perform
operations on real
numbers (including integer
exponents, radicals
percents, scientific notation,
absolute value, rational
numbers, and irrational
numbers) using multi-step
and real world problems.
New Vocabulary
discount
markup
selling price
sales tax
B
C
D
Discount, Markup, and Sales Tax
SALES A souvenir shop is selling
beach towels for 30% off the
original price.
SALE!
All beach towels
30% off!
1. Calculate the discount by
finding 30% of $25.
Regular price $25
2. What is the new cost of a
beach towel?
3. Multiply 0.70 and 25. How does the result compare to your answer
in Exercise 2?
Discount is the amount by which a regular price is reduced. You can
find the sale price of an item by subtracting the discount from the
original price.
Find the Sale Price
glencoe.com
MUSIC The CD Discount Superstore is advertising a 20% off sale.
Jonas wants to buy a CD that originally costs $18.50. Find the
sale price of the CD.
Method 1
Find the amount of the discount first.
The percent is 20%, and the whole is 18.50. We need to find the
amount of the discount, or the part. Let d represent the amount of
discount.
d = 0.20 · 18.50
Write the percent equation.
d = 3.70
Multiply.
Subtract the amount of the discount from the original price to find
the sale price. $18.50 - $3.70 = $14.80.
Method 2 Find the percent paid first.
If the amount of the discount is 20%, the percent paid is
100% - 20% or 80%. Find 80% of $18.50. Let s represent the sale price.
s = 0.80 · 18.50
Write the percent equation.
s = 14.80
Multiply.
The sale price of the CD is $14.80.
64
Chapter 1 Rational Numbers and Percent
Find the sale price of each item to the nearest cent.
a. CD: $14.50, 10% off
b. sweater: $39.95, 25% off
A store sells an item for more than it paid for that item. The extra
money is used to cover the expenses and to make a profit. The
increase in the price is called the markup. The amount the customer
pays is called the selling price.
Find the Selling Price
BUSINESS A bead store buys beads at wholesale prices
and then prices them to sell at a 75% markup. If a
strand of beads costs the store $9.14, what is the
selling price for the strand?
Method 1
Check for Reasonableness
To estimate the selling
price, think 75% of 9.14 is
about 43 of 10 or 7.50. The
selling price should be
about $9 + $7.50, or
$16.50.
_
Find the amount of the markup first.
The whole is $9.14. The percent is 75%. You
need to find the amount of the markup, or
the part. Let m represent the amount of the
markup.
m = 0.75 · 9.14 Multiply the percent equation.
m ≈ 6.86
Multiply.
Add the markup $6.86 to the store’s cost $9.14 to find the
selling price. $9.14 + $6.86 = $16.00
Method 2 Find the total percent first.
The customer will pay 100% of the store’s cost plus an extra 75%
of the cost. Find 100% + 75% or 175% of the store’s cost. Let p
represent the price.
p = 1.75 · 9.14 Multiply the percent equation.
p ≈ 16.00
Multiply.
The selling price of the beads is $16.00.
Find the selling price for each item given the percent of markup.
c. digital camera: $120,
d. sunglasses: $7,
55% markup
30% markup
e. SHIPPING Cheng-Yu ordered a book that cost $24 from an online
store. Her total with the shipping charge was $27. What was the
percent of markup charged for shipping?
Lesson 1-3 Apply Percents
65
Sales tax is an additional amount of money charged on certain goods
and services. You can find the total cost of an item by adding the
selling price and the sales tax.
Find the Total Cost
GAMES A board game that costs $25 is on sale for 15% off. The
sales tax is 6.25%. What is the total cost of the board game?
Step 1 Find the price of the game after the discount.
Let d represent the total discount.
part = percent · whole
⎫
⎬
⎭
⎫
⎬
⎭
⎫
⎬
⎭
Real-World Link
Checkers is one of the
oldest and most
popular board games.
A version of checkers
has been played as far
back as 3000 B.C.
d = 0.15 ·
d = 3.75
25
Write the percent equation.
Multiply.
Subtract the discount from the original price to find the sale price.
$25 – $3.75 = $21.25.
Step 2 Find the amount of the sales tax.
Let t represent the sales tax.
part = percent · whole
⎫
⎬
⎭
⎫
⎬
⎭
⎫
⎬
⎭
t = 0.0625 · 21.25
t ≈ 1.33
Write the percent equation.
Multiply.
Add the sales tax to the sale price to find the total price.
$21.25 + $1.33 = $22.58.
f. BIKES A mountain bike is originally priced at $125. A flyer
advertises the bike for 10% off. If there is a 7.85% sales tax, what
is the total cost of the mountain bike?
Example 1
(p. 64)
Example 2
(p. 65)
Example 3
(p. 66)
66
1. BICYCLES Find the sale price of a bicycle that is regularly $140 and is on
sale for 40% off the original price.
Find the selling price for each item given the percent of markup.
2. roller blades: $60, 35% markup
3. coat: $87, 33% markup
4. sunglasses: $25, 40% markup
5. snack mix: $7, 51% markup
Find the total cost of each item to the nearest cent.
6. DVD player: $75, 25% off, 5% tax
7 shirt: $19, 10% off, 7.5% tax
8. car: $8,500, 5% off, 8.25% tax
9. trampoline: $130, 15% off, 6.75% tax
Chapter 1 Rational Numbers and Percent
= Step-by-Step Solutions begin on page R3.
Extra Practice is on page EP4.
Examples 1 and 3
(pp. 64 and 66)
Find the sale price or total cost of each item to the nearest cent.
10. video game: $75, 25% discount
11. mountain bike: $399, 15% discount
12. skateboard: $119.95, 30% discount 13. earrings: $19.50, 35% discount
14. airplane ticket: $275, 6.5% tax
15. coat: $110, 7.85% tax
16. hotel room: $69.95, 5.25% tax
17. MP3 player: $220, 7.15% tax
18. SHOPPING Monica is shopping for clothes at a department store. Before
tax, her bill is $95.
a. She has a coupon to receive an additional 25% off her total purchase.
What is the total cost of her items before tax?
b. After she receives the discount, how much will her total bill be if there
is a 7.95% sales tax?
Example 2
(p. 65)
B
Find the selling price for each item given the cost to the store and
the markup.
19. computer: $700, 30% markup
20. CD player: $120, 20% markup
21. jeans: $25, 45% markup
22. baseball cap: $12, 48% markup
23 ALGEBRA Students receive a 20% discount off the price of an adult ticket
at the theater. If a student ticket is $6.80, find the price of an adult ticket.
Find the percent of discount given the original price and sale price of each
item.
24. coat: original price: $65
sale price: $42.25
25. shoes: original price: $90
sale price: $67.50
26. GRAPHIC NOVEL Refer to the graphic novel frame below for Exercises a–c.
Coupons can
save you so
much money!
a. Find the sale price of the sweater.
b. What is the price of the sweater after the 25% off coupon is used?
c. Jasmine thinks that because the sweater is 50% off and there is a
25% off coupon, the sweater is 75% off. Find the cost of the sweater if
it is 75% off. Compare this answer to your answer from part b.
Lesson 1-3 Apply Percents
67
C
27. CHALLENGE Jordyn purchased a sweater which originally cost $x.
The sale price was 20% off the retail, and she had a coupon which took
an additional 15% off the sale price. Sales tax of 6.5% was added to the
cost at the end. Write the final cost of the sweater in terms of x.
28. REASONING Should the sales tax always, sometimes, or never be calculated
first when dealing with discounts? Explain your reasoning.
29.
NGSSS
Practice
Explain the difference between discount and markup.
MA.7.A.1.2, MA.8.A.6.4
30. A television was originally priced at
$1,250. It is now on sale.
E
*'f n1
f]] What is the sale price of the
television?
A. $875
C. $425
B. $675
D. $375
31. Grace and her two brothers shared the
cost of a new video game system
equally. The original price of the system
was $179. They received a 15% discount
off the original price and paid 7.5% sales
tax on the discounted price. Find the
approximate amount that each paid for
the video game system.
32.
Solve each equation using a percent equation.
F. $51
H. $60
G. $55
I.
SHORT RESPONSE Pancho paid $36
for a video game that was originally
priced at $45. What was the percent of
discount?
(Lesson 1-2C)
33. Find 40% of 45.
34. What percent of 110 is 44?
35. 60 is 40% of what number?
36. What is 20% of 180?
37. SCHOOL A recent survey asked parents to grade themselves
based on their involvement in their children’s education. The
results are shown at the right. (Lesson 1-2B)
a. Write the percent of parents who gave themselves an A as
a decimal and as a fraction in simplest form.
2
b. Did more or less than _
of parents give themselves a B?
5
68
Chapter 1 Rational Numbers and Percent
$66
Parent Survey
35%
A(Superior)
44%
B(Above Average)
19%
C(Average)
D(Below Average)
1%
F(Failing)
1%
Multi-Part Lesson
1-3
Apply Percents
PART
Main Idea
Solve problems
involving simple and
compound interest.
NGSSS
MA.8.A.6.4 Perform
operations on real
numbers (including integer
exponents, radicals,
percents, scientific notation,
absolute value, rational
numbers, and irrational
numbers) using multi-step
and real world problems.
New Vocabulary
interest
simple interest
principal
compound interest
glencoe.com
A
B
C
D
Financial Literacy: Interest
CARS Have you ever dreamed of
buying your first car? Suppose you
want to buy a used car that costs
$4,000. You can pay $400 now and
borrow the remaining $3,600.
To pay off the loan, you will
pay $131.50 each month for
the next 36 months.
1. How much money will you pay in all for the car?
2. How much will it cost you to borrow the money for the car?
Interest is the amount of money paid or earned for the use of money.
For a savings account, you earn interest from the bank. For a credit card
or a loan, you pay interest to the bank. Simple interest is paid only on
the initial principal of a savings account or loan. To solve problems
involving simple interest, use the following formula.
Interest is the amount of
money paid or earned.
The annual interest rate
is expressed as a decimal.
=
The principal is the amount of
money invested or borrowed.
The time is written in years.
Find Simple Interest
Find the simple interest for $500 invested in a savings account at
3.25% for 3 years.
I = prt
Write the simple interest formula.
I = 500 · 0.0325 · 3
Replace p with 500, r with 0.0325, and t with 3.
I = 48.75
The simple interest is $48.75.
Find the simple interest to the nearest cent.
a. $400 at 3.67% for 2 years
b. $770 at 16% for 6 months
Lesson 1-3 Apply Percents
69
Find the Interest Rate
STUDENT LOANS Luis makes monthly payments of $290.28 on his
_
loan of $5,000. He plans to pay it off in 1 1 years. Find the simple
2
interest rate of his loan.
First find the total that Luis will pay.
1
years = 18 months
$290.28 · 18 = $5,225.04 1_
2
He will pay $5,225.04 - $5,000 or $225.04 in interest. So, I = 225.04.
Real-World Link
The average cost of
one year at a public
university is over
$11,000. Financial aid
such as scholarships,
grants, loans, and
work study can help
students pay for this.
I = prt
Write the simple interest formula.
225.04 = 5,000 · r · 1.5 Replace I with 225.04, p with 5,000, and t with 1.5.
225.04 = 7,500r
Simplify.
7,500r
225.04
_
=_
Divide each side by 7,500.
7,500
7,500
0.03 = r
The simple interest rate is 0.03 or 3%.
c. SAVINGS BOND Louie purchased a $200 savings bond. After 5 years,
it is worth $232.50. Find the simple interest rate for his bond.
Compound interest is paid on the initial principal and on interest
earned in the past.
Find the Total Amount
How much money is in an account where $1,500 is invested at an
interest rate of 5.75% compounded annually for 2 years?
Find the amount of money in the account at the end of the year 1.
I = prt
I = 1,500 · 0.0575 · 1
I = 86.25
Write the simple interest formula.
Substitution
Simplify.
1,500 + 86.25 = 1,586.25
Add the amount invested and the interest.
Find the amount of money in the account at the end of year 2.
I = prt
Write the simple interest formula.
I = 1,586.25 • 0.0575 • 1 Substitution
I = 91.2094
Simplify.
So, after 2 years there is $1,586.25 + $91.21 or $1,677.46.
d. What is the total amount in an account where $875 is invested at
an interest rate of 12% compounded annually for 3 years?
70
Chapter 1 Rational Numbers and Percent
Example 1
(p. 69)
Example 2
(p. 70)
Example 3
(p. 70)
Find the simple interest to the nearest cent.
1. $300 at 7.5% for 5 years
2. $230 at 12% for 8 months
3. CAR SALES Keisha borrowed $4,000 to buy a car. If her monthly payments
are $184.17 for 2 years, what is the simple interest rate for her loan?
Find the total amount in each account to the nearest cent, if the interest is
compounded annually.
4. $660 at 5.25% for 2 years
5. $385 at 12.6% for 4 years
6. Nina invested $1,000 in an account for 3 years. Find the total amount if
the interest is compounded annually at a rate of 2.75%.
= Step-by-Step Solutions begin on page R3.
Extra Practice is on page EP4.
Example 1
(p. 69)
Find the simple interest to the nearest cent.
7. $250 at 6% for 3 years
9. $834 at 7.25% for 2 months
Example 2
(p. 70)
8. $725 at 4.5% for 4 years
10. $3,070 at 8.65% for 24 months
11. BASEBALL CARDS The prices for a vintage
baseball card are given at the right. Determine
the simple interest rate for a card purchased as
an investment in 1968 and sold in 2011.
Year
Price for
Baseball Card
1968
$18.00
2011
$325.80
12. SAVINGS Colin is borrowing money from his parents to purchase a $700
computer. He will pay them $35 per month for two years. Determine the
simple interest rate on Colin’s loan.
Example 3
(p. 70)
B
Find the total amount in each account to the nearest cent, if the interest is
compounded annually.
13 $2,250 at 5% for 3 years
14. $5,060 at 7.2% for 2 years
15. $575 at 4.25% for 18 months
16. $950 at 7.85% for 3 years
17 CARS Felicia took out a 5-year loan for $15,000 to buy a car. If the interest
is compounded annually at a rate of 11%, how much will she pay in all?
Find the simple interest to the nearest cent.
1
18. $1,000 at 7_
% for 30 months
2
1
1
19. $5,200 at 13_
% for 1_
years
5
2
20. CREDIT CARDS The balance on a credit card was $500. Mrs. Cook paid the
minimum monthly payment of $25. The remaining balance was charged
a simple interest rate of 18%. If no additional purchases were made, what
was the balance the next month?
21. HOUSING The Turners need to borrow $100,000 to purchase a home. The
credit union is offering a 30-year mortgage loan at 5.38% interest while
the community bank has a 25-year mortgage loan at 6.12% interest.
Assuming simple interest, which loan will result in less total interest?
Lesson 1-3 Apply Percents
71
C
22. CHALLENGE What will be the monthly payments on a loan of $25,000 at
9% simple interest so that it will be paid off in 15 years? How much will
the total interest be?
23. OPEN ENDED Give a principal and interest rate where the amount of
simple interest earned in 6 months is more than $100.
24.
NGSSS Practice
If you have money in a savings account for 8 months,
what value for t would you use in the formula I = prt to find the interest
you have earned? Explain.
MA.8.A.6.4
25. Mrs. Owens placed $1,500 in a college
savings account with a simple interest
rate of 4% when Lauren was born. How
much will be in the account in 18 years
when Lauren is ready to go to college?
Assume no more deposits or
withdrawals are made.
26. Dave borrowed $4,000 from the bank at
an interest rate of 9%. The interest is
compounded annually. Suppose he
made no payments, approximately how
much would he owe at the end of three
years?
F. $1,080
A. $1,080
G. $1,180
B. $2,580
H. $5,080
C. $10,800
I.
$5,180
D. $12,300
27. DISCOUNT A watch that regularly sells for $35 is on sale for $26.95. Find the
percent of discount. (Lesson 1-3A)
28. COLORS The table lists the number of each color of candies
in a jar. (Lesson 1-2C)
Color
Number
Brown
12
a. What percent of the candies are brown?
Green
5
b. What percent of the candies are green?
Yellow
4
Red
2
Orange
1
Blue
1
1
29. Order the set of numbers _
, 16%, and 0.016 from
6
least to greatest.
(Lesson 1-2B)
3
30. VEGETABLES Hudson purchased 3_
pounds of vegetables
8
that cost $3 per pound. What was the total cost of the vegetables?
Add.
(Lesson 0-3)
31. -48 + 13 + (-16)
32. 35 + 17 + (-25)
33. -50 + (-62) + 3
34. 27 + (-30) + (-26)
72
Chapter 1 Rational Numbers and Percent
(Lesson 1-1C)
Multi-Part Lesson
1-3
Apply Percents
PART
A
B
C
D
Spreadsheet:
Main Idea
Compound Interest
Find compound
interest.
You can use a spreadsheet to investigate compound interest.
NGSSS
MA.8.A.6.4 Perform
operations on real
numbers (including integer
exponents, radicals,
percents, scientific notation,
absolute value, rational
numbers, and irrational
numbers) using multi-step
and real world problems.
glencoe.com
The
spreadsheet
evaluates
the formula
A4 × B1.
Find the value of a $2,000 savings account after four years if
the account pays 8% interest compounded semiannually.
8% interest compounded semiannually means that the interest
is paid twice a year. The interest rate is 8% ÷ 2 or 4% every
6 months.
$PNQPVOE*OUFSFTU
#
$
%
"
3BUF
*OUFSFTU
/FX1SJODJQBM 5JNF:3
1SJODJQBM
4IFFU
4IFFU
The interest
rate is
entered as
a decimal.
The interest
is added to
the principal
every 6
months. The
spreadsheet
evaluates
the formula
A4 + B4.
4IFFU
The value of the savings account after four years is $2,737.14.
and Apply
1. Use a spreadsheet to find the value of a savings account if $2,000
is invested for four years at 8% interest compounded quarterly.
2. Suppose you leave $1,000 in each of three bank accounts paying
6% interest per year. One account pays simple interest, one pays
interest compounded semiannually, and one pays interest
compounded quarterly. Use a spreadsheet to find the amount of
money in each account after three years.
3. MAKE A CONJECTURE How does the amount of interest change if the
compounding occurs more frequently? Explain your reasoning.
Lesson 1-3 Apply Percents
73
Multi-Part Lesson
1-3
Apply Percents
PART
Main Idea
Find and use the
percent of increase
or decrease.
NGSSS
MA.8.A.6.4 Perform
operations on real
numbers (including integer
exponents, radicals,
percents, scientific notation,
absolute value, rational
numbers, and irrational
numbers) using multi-step
and real world problems.
A
B
D
C
Percent of Change
STAMPS Over the years, the price of
stamps has increased. Refer to the
table that shows the change in stamp
prices from 1963 to 1981.
Price of a Stamp
Effective Date
Price for the
First Ounce (¢)
January 7, 1963
5
March 2, 1974
10
May 29, 1978
15
November 1, 1981
20
1. How much did the price increase from 1963 to 1974?
amount of increase
2. Write the ratio __
. Then write the ratio as a percent.
price in 1963
New Vocabulary
percent of change
percent of increase
percent of decrease
3. How much did the price increase from 1974 to 1978? Write the
amount of increase
ratio __
. Then write the ratio as a percent.
price in 1974
4. How much did the price increase from 1978 to 1981? Write the
amount of increase
ratio __
. Then write the ratio as a percent.
price in 1978
glencoe.com
5. MAKE A CONJECTURE Why are the amounts of increase the same but
the percents different?
The percent that an amount changes from its original amount is called
the percent of change.
Percent of Change
Words
A percent of change is a ratio that compares the change in
quantity to the original amount.
Symbols
percent of change =
amount of change
__
original amount
To find the percent of change, do the following:
Step 1 Subtract the original amount from the final amount to find
the amount of change.
amount of change
original amount
Step 2 Write the ratio __ as a decimal.
Step 3 Write the decimal as a percent.
74
Chapter 1 Rational Numbers and Percent
When the percent is positive, the percent of change is a percent of
increase. When the percent is negative, the percent of change is called
a percent of decrease.
Percent of Change
When finding percent of
change, always use the
original amount as the
whole.
Find Percent of Change
YEARBOOKS Last year Wesley Middle School sold 174 yearbooks.
This year they sold 200 yearbooks. Find the percent of change.
Round to the nearest tenth if necessary. State whether the change
is an increase or decrease.
Step 1 Subtract to find the amount of change.
200 - 174 or 26.
final amount - original amount
amount of change Definition of percent
Step 2 percent of change = __ of change
original amount
=
26
_
Substitution
Divide. Use a
calculator.
174
≈ 0.1494252
Step 3 0.1494252 =14.94252% or 14.9%.
Since the percent of change is positive, it is a percent of
increase.
WEATHER On average, Florida has 54 inches of rainfall per year,
but in 2007, it had only 45 inches of rainfall. Find the percent of
change. Round to the nearest tenth if necessary. State whether
the change is an increase or decrease.
Step 1 Subtract to find the amount of change.
45 - 54 or -9
final amount - original amount
amount of change
original amount
Step 2 percent of change = __
=_
Substitution
−
≈ -0.16
Divide. Use a
calculator.
-9
54
Real-World Link
The National Oceanic
and Atmospheric
Administration or
NOAA is the
government agency
responsible for
monitoring the weather
in the United States.
The agency is able to
monitor storms such as
hurricanes from the sky.
Definition of percent
of change
Step 3 Express the ratio as a percent.
−−
-0.16 = -16.666...% or -16.7%
Since the percent of change is negative, it is a percent of
decrease.
Find each percent of change. Round to the nearest tenth if necessary.
State whether the percent of change is an increase or a decrease.
a. original: 6 hours
new: 10 hours
b. original: 80 water bottles
new: 55 water bottles
Lesson 1-3 Apply Percents
75
Examples 1 and 2
(p. 75)
Find each percent of change. Round to the nearest tenth if necessary. State
whether the percent of change is an increase or a decrease.
1. original: $40
new: $32
2. original: 25 CDs
new: 32 CDs
3
original: 325 miles
new: 400 miles
4. BOWLING Inez bowled a 127 her first game. In her second game, she bowled
a 145. Find the percent of change. Round to the nearest tenth if necessary.
State whether the change is an increase or a decrease.
= Step-by-Step Solutions begin on page R4.
Extra Practice is on page EP5.
Examples 1 and 2
(p. 75)
Find each percent of change. Round to the nearest tenth if necessary. State
whether the percent of change is an increase or a decrease.
5. original: 6 tickets
new: 9 tickets
6. original: 27 guests
new: 39 guests
8. original: $560
new: $420
9. original: 68°F
new: 51°F
7. original: $80
new: $64
10. original: 150 e-mails
new: 98 e-mails
11. TELEVISION On Tuesday night, 17.8 million households watched a
popular television show. On Wednesday night, 16.6 million households
watched the same show. Find the percent of decrease in the number of
households watching the show from Tuesday to Wednesday.
12. STOCK Patrice invested $300 in a particular stock. The amount doubled
within a few weeks. Find the percent of increase.
B
13 INTERNET An Internet service provider offers a connection speed that is 35%
faster than dial-up. If it takes Brad 8 seconds to connect to the Internet using
dial-up, how long would it take using this provider?
14. GRAPHIC NOVEL Refer to the graphic novel frame below for Exercises a–b.
I can’t believe
how much the
original price
changed.
Another great
deal! We should come
here more often.
a. What is the price of the shirt if Alma uses the 25% off coupon?
b. Find the percent of change from the original price. Is the percent of
change a percent of increase or decrease?
76
Chapter 1 Rational Numbers and Percent
C
15. OPEN ENDED Give an example of a real-world situation where a percent of
change occurs.
16. CHALLENGE The percent of change over Ethan’s last three test scores is
15%. If he scored a 92 on the last test, what are possible scores for the
first two tests?
17.
NGSSS Practice
Write and solve a real-world problem involving
a 25% increase or decrease in some quantity.
MA.8.A.6.4
18. On Monday, the high temperature was
66°F. On Wednesday, it was 79°F. What
was the percent of change?
A. -19.7%
C. 16.5%
B. -16.5%
D. 19.7%
20. Which of the following represents the
greatest percent of decrease?
A. A pair of jeans originally priced at
$22 on sale for $15.
B. The number of pages left to read
decreased from 281 to 180 pages.
19. If the dimensions of the square below
are doubled, what is the percent of
increase in the area of the square?
C. The paper route went from 45
houses to 30 houses.
D. Attendance decreased from 176 on
Friday to 114 on Saturday.
5.5 cm
5.5 cm
F. 100%
H. 300%
G. 200%
I.
400%
21. SAVINGS The Millers opened a savings account for their newborn son with
$430. Find the total amount in the account after 3 years if the simple interest
rate is 2.5%. (Lesson 1-3B)
22. SALES What is the sale price of a $200 cell phone on sale at 10% off the
regular price? (Lesson 1-3A)
GEOMETRY Find the perimeter of each figure.
23. 1 ft
2
1
1 2 ft
(Lesson 1-1B)
24.
1
5
2 6 in.
1 6 in.
1
3 6 in.
Lesson 1-3 Apply Percents
77