Chapter 4 Expressions

-4x+1=21

• x=120

• x=5

• x=30

• x=-5

-11 + 3(b + 5) = 7

• 1

• -1

• 3

• -3

2x - 3 + 4x = 27

• x= 12

• x = 4

• x = 5

• x = 15

Solve:
3x + 15 = 3(x + 5)

• No Solution

• x = 15

• Infinitely Many Solutions

14 - 2 ( 3p + 1) = 6 ( 4 + p)

• No Solution

• One Solution

• Infinite Solutions

A canoe rental service charges a $20 transportation fee and $30 dollars an hour to rent a canoe. Write an equation representing the cost, y, of renting a canoe for x hours.

• y = 30x + 20

• y = 20x + 30

• y = 50x

• y = 60x

In this soccer season, Emma has scored 1 more than twice the number of Nick's goals.  If Emma has scored 15 goals, which equation can be used to find x, the number of Nick's goals?

• x - 15 = 1

• x + 1 = 15

• 2x + 1 = 15

• x + 1 = x + 15

Mary earns $14 per hour. Which equation represents how many hours she worked to earn $112? 

• 14h = 112

• 14 / h = 112

• h + 14 = 112

• h - 14 = 112

4x - 10 ≤ 22

• x ≤ 8

• x ≥ 8

• x ≤ 3

• x ≥ 3

15 + 7x ≥ 29

• x ≥ 2

• x ≥ -2

• x ≤ 2

• x > 2