Ch 3. Review

What is the first thing you do when evaluating an expression

• Substitute value in for the variable

• Combine like terms

• Parenthesis

Evaluate the expression y=15 z=8

z² + 5y - 20

• 9

• 8

• 12

• 119

Evaluate m² + 12q if m = 5 and q = -3

• 10

• -25

• -11

• 13

Using the steps shown, Heather tried to simplify this expression. What was her first mistake?

• Step 1

• Step 2

• Step 3

• Step 4

What is the proper order of operations needed to simplify this expression?

• add, divide, multiply

• multiply, divide, add

• divide, multiply, add

• add, multiply, divide

x - 2 = 2x + 1

• x = 3
• x = 6
• x = -3
• x = 5

3x - 4 = x + 10

• x = 7
• x = -7
• x = 0
• x = 4

Simplify the following expression:
(5 + 4x) + (2x - 8)

• 13 + 6x
• 6x - 3
• 6x - 13
• 6x + 3

What are like terms?

• Terms with different variables

• Terms with the same variables

• Terms with no variables

X² can be combined with X

• True

• False