Evaluate Expressions

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

• 18

• -38

• 12

• -2

If x = 3 solve x + 4 =

• 5

• 6

• 7

• 8

What is the first thing you do when evaluating an expression

• Substitute value in for the variable

• Combine like terms

• Parenthesis

Evaluate -2x  if     x = 10

• -8

• 20

• -20

Evaluate 7 + j if     j = -2

• -14

• 14

• 5

• 9

If x = 3 evaluate x + 4 =

• 5

• 6

• 7

• 8

(s – 5)² 
s = 13 

• 34

• 64

• 144

• 16

b(b + 12)
b = 2

• 28

• 14

• 144

• 24

4(t – 2) + 3
t = 10

• 35

• 24

• 12

• 36

n² + 7
n = 3 

• 16

• 17

• 44

• 11