_I PRACTICE.,. ~()JtltW'Il/c
t hour. Complete the table to find how far
1. Brandon enters bike races. He bikes .~ miles every
Brandon bikes for each time interval.
J"'lS ~
I
Distance
,~
sJ.
(mi)
2
~21
\1 251.
1
Time (h)
11
1
:2
2
'­
222
Simplify each complex fraction.
2.
~t~8 ~ ~ . Li
S 5
i ==~ ;. ~
,~
1
l­
3.
J.,
4.
~ .. d
~ ~
Ii
Find each unit rate.
6.
Julio walks ~ miles in
c1 ~ J'lI1/ fes
8.
Ii hours.
{We
7.
t-tv
Marcia uses ~4 cup sugar when she
halves the recipe.
(
~
C-v,o.f
5
. 2
.
K enny rea ds B
page In 3" mInute.
12- •
3 ~ 15
-2
'l.­
1
Sandra tiles §. square yards in
9.
h
1b ~ m \'" 01"'­
4
1
-3
hours.
,0(3£ t;.JfIat..-?
y
~,oe=-
The information for two cell phone companies is given.
10. What is the unit rate for On Call?
On Call
3.5 hours:
$10
!.:t;;,. a'S fJr;n, r/t.J u /L
11. What is the unit rate for Talk Time?
Talk Time
hour:
$1.25
-1
'\t~· 2 ~21S0 hovv
12. Determine which of the companies offers the best deal. Explain your answer.
13. What in Another company offers a rate of $0.05 per minute.
~·o
d,os
a. How would you find the unit rate per hour?
(t)~~~~
b. Is this a better deal
-:: , ht'"'
than ~or
~~ n~ &-
G.OS(bO) ~
Talk Time?
P~tt.
~
t
3 rtr hr.
PRACTICE
Cl~
ttoffie.wol(lZ
~Tell whether the relationship is a proportional relationship. If so, give the constant of proportionality. ........
~
1. Number
of
Minutes
2.
4
3
6
5
7
Number
of
Seconds
2
4
3
..-­
5
Time (h)
1
Biking
Distance
(mi)
12 26 36 44 50
1-
~Naomi reads 9 pages in 27 minutes, 12
4. A scuba diver descends at a constant rate f
pages in 36 minutes, 15 pages in 45 minutes, 8 feet per minute.
and 50 pages in 150 minutes.
n~3
.,
1.1. -:; 3
4!;
ji2:
,{
~3
~
~3
=:. D ~ / CD't"\~T =
Write an equation for the relationship. Tell what the variables represent.
3
QIt takes Li 1 hour to drive 65 miles, 2 hours
to drive 130 miles, and 3 hours to drive 195
miles.
Gallons
of
Gasoline
8. 3
4
5
6
(Jdt>
U : ~\('""
~J
,
~<:.3,15
\~,qo
6
Cups of
Batter
Number of
Total
9.45 12.60 15.75 18.90
C ost ($)
3
6. There ar 3~illigrams of calcium in each
ounce of ce ed chicken.
L"II:"".... ,
2
6
8
5
15
20
7f",
*.. '1{"
~~ - ~ J
30
L...­
f'11\)'rJ'"rrv '
lS:-Js·
.
-J.') \.-
~
5
12
I;::; ~ ~I, (..J
r~
2-~5~
SX _-JE.y~~~
A _ __
~ \
~ ::...~\
. . 3, tr\::>
Information on three car rental companies is given.
Rent-AU
Days
3
4
5
6
Total
Cost 55 .50 7:l.00 92.50 111.00
($)
A-I
Rentals
The costy of
renting a car
for x days is
given by y =
22.5x.
Car Town
The cost of
renting a car
from us is just
$19.25 per day!
. Write an equation that gives the costy of renting a car for x days from Rent-All.
_