Evaluating Expressions and Formulas

4x - 2

when x = 6

• 20

• 21

• 22

• 23

21 + 7x

when x = 2

• 30

• 27

• 50

• 35

Evaluate n³ if n = 4

• 12

• 16

• 32

• 64

6a - 3d
when a = 1, d = 2

• 3

• 12

• 1

• 0

Evaluate m - n if m = 29 and n = 11

• 29

• 28

• 19

• 18

3r + 2e; r = 3  e = 2

• 15

• 13

• 54

• 12

What is the value of x?
3x + 4 when x = -2

• 10

• 2

• -2

• 4

Simplify the following:  
-8 + (15 - 3) ÷ 4

• -5

• 1

• -11

• 11

5m + 9n if m = -7 and n = 4

• 71

• 1

• -1

• -71

Evaluate 3x + 8   if x = 2

• 13

• 14

• 15

• 16