Unit 3 Review: Expressions

Evaluate the expression 3x - 4y when x = 10 and y = 3

• 38

• 34

• 26

• 18

Tracey has t dollars. Stacey has s dollars. Which shows twice Tracey's money minus double Stacey's money?

• 3t + 2s

• 2t - 2s

• 2s - 3t

• 2(3s + t)

Simplify the expression 12x - 8 + 3x

• 0x

• 12x - 8

• 15x - 8

• 4x

Simplify this expression: 5x + 5 + 5x - 3

• 12x + 13

• 10x + 2

• 12x - 7

• 19x

Simplify the expression 3(5 - 3x) + x

• 15 - 8x

• 8 - 10x

• 15 + 8x

• 15 - 5x

If you work 5 hours and get paid x dollars an hour AND on your way home you find a 20 dollar bill, how much did you make today?

• 5x

• Impossible to know

• 5x + 20

• 25x

Which expression is equivalent to 10n - 25?

• 2n - 5

• n - 5

• 5(2n-5)

• 15n

Which expression is equivalent to 4(3x - 2)

• 12x + 8

• 8x-2

• 4x - 2

• 12x - 8

Movie tickets cost $10. Popcorn costs $5. Which expression shows how much it will cost to buy M movie tickets and P boxes of popcorn?

• 10P + 5M

• 10M + 5P

• 15M

• M + P

Evaluate the expression 5x + 10 + 2y - 1 when x = 10 and y = 3

• 65

• 16

• 28

• 30