4.4 Evaluate Expressions — Corrective Assignment

Evaluate 8 − 3x when x = 4.

• −4

• −12

• 4

• 20

Evaluate 4(5x + 3) when x = −2.

• −28

• −14

• 28

• −40

• 9

• 21

• 1

• 29

Evaluate 5 + (n − 2) when n = 6.

• 7

• 9

• 11

• −1

Evaluate 3a − 2b − 1 when a = 3 and b = 2.

• 2

• 4

• 6

• −4

Evaluate 2(3 + x) + 3y when x = 4 and y = −2.

• 20

• 8

• −2

• 0

Bob has $9 and makes 8 dollars every hour. Which expression gives the amount of money he has after h hours?

Bob has $9 and makes 8 dollars every hour. How much money does he have in 3 hours?

Keri has 20 pencils and gives 2 away every day. Which expression gives how many pencils she has after d days?

Keri has 20 pencils and gives 2 away every day. How many pencils will she have in 4 days?