BELLWORK
SPI 3.5
Quiz Equations with Variable on Each Side
1. 3x ­ 3 = x + 7
1. 2b ­ 10 = ­3b + 5
2. 4 + 12a = ­2(6 ­ 4a)
2. 2(y ­ 4) = ­4y + 10
3. 4c ­ 10 = 2(2c ­ 5)
3. 5 + 4p = 2(2p + 1)
Unit 2: Equations
­2x + 5y = 12, for y
Word Problems and Literal Equations
SPI 1.2 Write an equation for a contextual problem
SPI 3.5 Write and/or solve linear equations
Agenda
Literal Equations
Word Problems
Practice
a ­ 2b = ­10, for b
c = 2 (a ­ 32), for a
1
Try Some...
c = 2d, for d
a = bh, for h
2
Word Problems
Online Video Games: Angie and Kenny play online video games. Angie buys 1 software package and 3 months of game play. Kenny buys 1 software package and 2 months of game play. Each software package costs $20. If their total cost is $115, what is the cost of one month of game play?
y = 2x + 1, for x
P = 2l + 2w, for w
Word Problems
General admission tickets to the fair cost $3.50 per person. Ride passes cost an additional $5.50 per person. Parking costs $6 for the family. The total costs for ride passes and parking was $51. How many people in the family attended the fair?
TRY
A movie club charges a one­time membership fee of $25 which allows members to purchase movies for $7 each. Another club does not charge a membership fee and sells movies for $12 each. How many movies must a member purchase for the cost of the two clubs to be equal?
Word Problems
Pristine Printing will print business cards for $.10 each plus a setup charge of $15. The Printing Place offers business cards for $.15 each with a setup charge of $10. What number of business cards costs the same for either printer?
Practice and Apply
Word Problems and Literal Equations WS
SPI 1.2 and 3.5
2