Evaluate Expressions with Algebraic Substitution

Simplify the expression 3a - 2b + 4a when a = 1 and b = 3.

• -2

• 5

• 1

• 7

Substitute the value of y in the expression 2x + 3y^2 when x = 2 and y = -1.

• 9

• 5

• 7

• -1

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

Evaluate the following expression. Show your work in your notebook!

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

• 60

• 40

• -2

• 20

• 42

• 36

• 312

• 43

b² + 4
when b = 3

• 10

• 12

• 13

• 11

Evaluate m² if m = 5

• 10

• 25