SF7 Unit 4 Quiz Review

x + 5 = 10

• 2

• 5

• 10

• 15

4x = -20

• -24

• -5

• 5

• 80

x - 7 = -3

• -10

• -4

• 4

• 10

3.5x = 18.2

• 5.2

• 14.7

• 21.7

• 63.7

 $\frac{2}{3}$ x = -6

• -9

• -4

• 4

• 9

5(x - 3) = 35

• 7.6

• 10

• 27

• 33

2x + 2.5 = 5.9

• 6.8

• 4.2

• 1.7

• 0.45

-4x - 6 = -10

• -4.5

• -1

• 1

• 4

Mr. Fitzpatrick recently replaced his sidewalk. He paid $425 for the concrete which cost $50 a yard. He received y yards of concrete. The delivery fee was $75. Which equation models this situation?

• 50 + 75 = 425

• 50 + 75y = 425

• 50y + 75 = 425

• (50 + 75)y = 425

Miss Kwon teaches 2nd grade and has 15 students who LOVE pizza.  If  $\frac{3}{4}$ of her students LOVE pizza, how many total students does she have?

• 15

• 18

• 20

• 24