8.8C Pre-Quiz

Renting a kayak costs $10 per hour. Renting a canoe costs $5 per hour plus a $7 fee. Which equation could be used to determine h, the number of hours for which they each cost the same?

• 10h=5h+7

• 10h=5+7h

• 10h+5h=7

• 5h=10h+7

Julie started with 20 pieces of gum and gave away x pieces. Conrad started with 35 pieces of gum and gave away twice as many pieces as Julie did. How many pieces of gum did Julie give away if they had the same number of pieces of gum left?

• 18

• 5

• 15

• 8

What value of x makes this equation true?

• 3

• -9

• -1

• 27

A rectangle’s perimeter and its area have the same numerical value. The width of the rectangle is 3 units. What is the length of the rectangle in units?

• 6

• 2

• 7

• 12

What is the solution to this equation?

2x + 3 = x − 4

• -3

• 0

• -7

• 7

The measures of two angles are (5x + 24)° and (9x - 17)°. What is the value of x if these angles are congruent?

• 1.75

• 13.2

• 0.5

• 10.25

Solve for x in the equation below.

6(x + 3) = 3(x + 10)

• x=6

• x=4

• x=9

• x=8

• 1.3

• -1.3

• -0.75

• 0.75

Two companies are shipping a box. Company A charges $7.25 for shipping and $0.20 for each pound. Company B charges $5.15 for shipping and $0.30 for each pound. How many pounds, p, will it take for Company A and Company B to cost the same?

• 0.5

• 7.25

• 5.15

• 21

Two expressions are shown below:

Expression 1: 0.25x - 12

Expression 2: 18 - 0.55x

For which value of x will the two expressions have the same value?

• -100

• -20

• 7.5

• 37.5