Fall Review - Day 1

In the equation 3(2x - 4) = -18 equivalent to 6x - 12 = -18

• Yes, the equations are equivalent by the associative property of Multiplication.
• Yes by Commutative Property of Multiplication
• Yes by Distributive Property of Multiplication.
• No, they are not equivalent.

Solve for x:

15x - 3(3x + 4) = 6

• 1

• -1/2

• 3

• 1/3

Solve for x:
5x - 2(x + 1) = 10

• 4
• -4
• 2
• -2

Solve for y:
6 - 3y = -9 + 2y

• 15
• -3
• 3
• -15

The computer game Peter wants to buy will cost at least $50 and not more than $70.  He earns $3 an hour running errands for his grandmother.  Which inequality shows the number of hours, h, he will have to work to pay for the game? 

• 3n ≥ 20
• n/3 ≥ 20
• 50 ≤ 3n ≤ 70
• 50 ≤ n/3 ≤ 70

Solve for m.

• 50
• -50
• 2
• -2

Simplify the following expression:
12m - 31m + 5

• -19m + 5
• 19m + 5
• 24m
• 24

Simplify the following expression:
10y - 3(2x + 3) + 5x

• x + 10y - 9
• 11xy - 9
• 2xy
• 9x - 9

Which line shows the first mistake?

• Line 2
• Line 3
• Line 4
• Line 5

What is the value of n if

n/9 + 10.36 = 25.36

• 12

• 135

• 218.88

• 321.48