Evaluating the Expression

Evaluate 2r + 1      if   r = 3

• 6

• 5

• 7

• 8

3x + 8   if x = 2

• 13

• 14

• 15

• 16

Evaluate -2x + -3y if x = 10 and y = -6

• 18

• -38

• 12

• -2

The expression 10+2r can be used to calculate how much someone spends at the fair; where 10 represents the cost of the admission and 2r is the cost for each ride.

How much will a person that rides 8 rides spend at the fair?

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

• -5

• 1

• -11

• 11

Solve the following:
(2 + 7 - 1) ÷ 2²

• 16

• 2

• 72.25

• 8.75

(7 + 41) ÷ 2 – 15

• 19

• 9

• 25

• 3

3 x 8 - (9 - 7)³

• 16

• 18

• 0

-2 ⋅ (3 + 8 ÷ 4)²

• -16

• 1.375

• 4

• -50

Evaluate the expression.

• -30

• -18

• 30

• -66