Evaluate Expressions with Variables

4(f-5)

if f=7

• 2

• 6

• 20

• 8

24 + s

if s=10

• 240

• 14

• 34

• 2410

7 - (2g)

if g=1

• 5g

• 5

• 14

• None of the above

4w + 3

if w=2

• 11

• 9

• 7

• None of the above

Rachel bought "s" pairs of socks.  Steven bought 6 pairs of socks.  Emma bought twice as many socks as both Rachel and Steven.  Which expression represents how many socks Emma bought? 

• s + 6

• 2s + 6s

• 2(s + 6)

• s + 12

The length of a rectangle is represented by (5x - 3) and the width is (x + 3). If x = 2, then which of the following values is the actual perimeter of this rectangle?

• 18

• 14

• 24

• 20

A rectangle has a dimension that is represented by (2c + 1) and another dimension that is (3 + c). If c = 3, then that is the actual area of this rectangle?

• 13 square units

• 42 square units

• 36 square units

• 12 square units

Evaluate the expression
when x=8 and y=12.
4x − 2y 

• 4(8) − 2(12)

• 0

• 8

• 4

• 15

• 25

• 75

• 5

Evaluate the expression 16 + 36 ÷ b. For b = 4

• 56

• 25

• 24

• 13