Evaluate Algebraic Expressions with Substitution

Plugging in a number for a variable is called

• operation

• evaluation

• substitution

• solving

Evaluate 3t - 12 when t=10

• 120

• 14

• 18

• 60

Evaluate 3x + 8   if x = 2

• 13

• 14

• 15

• 16

When you replace a variable with a value it is called...

• replacing

• substitution

• algebraic

• numerical

x-10(y) when x=40 and y=2

• 60

• 40

• -2

• 20

• 28

• -3

• 45

• 32

• 25

• 15

• 10

• 7

• 42

• 36

• 312

• 43

b² + 4
when b = 3

• 10

• 12

• 13

• 11

Evaluate m² if m = 5

• 10

• 25