Evaluating Variable Expressions

Jamie uses the following expression to figure out how many wrapped presents she will have: 6h + s The variable h represents how many hours she spends wrapping and s represents how many presents that were already wrapped. If she wrapped for 4 hours and already had 10 presents wrapped, how many wrapped presents will she have?

• 34 wrapped presents

• 74 wrapped presents

• 20 wrapped presents

• 40 wrapped presents

Evaluate the following expression: x - 6

Where x = 32

• 38

• 26

• 18

• 4

Evaluate the following expression: 2b + 3

Where b = 7

• 30

• 12

• 17

• 24

Evaluate the following expression: m + 5p

Where m = 15

Where p = 4

• 79

• 35

• 69

• 24

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

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

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

• 4(8) − 2(12)

• 0

• 8

• 4

Evaluate the following expression:

k + 3 - c (v)

Where k = 30

Where c = 7

Where v = 4

• 6

• -61

• 42

• 15

Michael uses the following expression to help figure out how much money he makes:

8w + t

The variable w represents the amount of weeks he works and t represents the number of tips he makes. If he works for 6 weeks and makes $20 in tips, how much money did he make?

• $26

• $68

• $106

• $34

Evaluate the expression:

3d if d = 5

• 3

• 5

• 12

• 15