Unit 9 Review

Which procedure correctly simplifies the expression below?

-(x - 5) – 3(4x – 3)

• Step 1: –x - 5 – 12x - 9

  Step 2: -13x - 14

• Step 1: – x + 5 – 12x + 9

  Step 2: -13x + 14

• Step 1: –x + 5 + 12x + 9

  Step 2: 11x + 14

• Step 1: –x + 5 – 12x - 9

  Step 2: -13x - 4

Tags

CCSS.6.EE.A.3

Which algebraic expression represents the difference of 12 and one-fourth of x?

• 12 + .25x

• (12 + x).25

• 12 - .25x

• 12.25x

Tags

CCSS.6.EE.A.2A

Members of the football team are selling candy bars to raise money. The coach uses this equation to calculate the amount of profit, p, made from selling n candy bars.

P = 2n – 200

How many candy bars must be sold to make a profit of $800?

• 300

• 1000

• 500

• 200

Tags

CCSS.7.EE.B.4A

A rectangle has a length of (x+6) centimeters and a width of  $\frac{1}{2}$  x centimeters.  If the perimeter is 21 centimeters, what is the length of the rectangle?

• 9 cm

• 3 cm

• 12 cm

• 6  cm

Mr. Davis spent $1000 to stay in a resort for five nights. Each night he spent x dollars on the resort room as well as a $20 parking fee per day. The equation below represents the total amount, in dollars, that Mr. Davis spent on his hotel.

5(x + 20) = 1000

How much money did the hotel room cost for one night, excluding the parking fee?

• $180.00

• $200.00

• $160.00

• $210.00

Tags

CCSS.7.EE.B.4A

Rosalyn went to the school store to buy some snacks. She spent a total of $11.00 on chips and candy. The chips cost $1.00 and each candy bar cost $1.25. If Rosalyn bought one bag of chips, determine the number of candy bars Rosalyn bought.

• 8

• 9

• 10

• 7

Tags

CCSS.7.EE.B.3

The table below shows the cost of various products at a souvenir shop.

Write an expression that represents the cost to buy 2 t-shirts and 2 mugs. Choose the correct

simplified expression.

• 5x - 10

• 4x - 9

• 5x + 10

• 4x - 25

Tags

CCSS.7.EE.A.1

Ms. Parker wrote the equation 2x – 5 –  $\frac{1}{2}$  (10x – 6) = 13 on the board. What is the solution to the equation?  

• -4

• -6

• -3

• -5

Tags

CCSS.8.EE.C.7B

Jamie wants to purchase a calculator with an original price of $40.00. The calculator was on sale 40% off and she had a coupon for $5.00 off any purchase. Determine which price is correct?

• $9.00

• $24.00

• $19.00

Tags

CCSS.7.EE.B.3

Solve the following equation:

8x + 3 = -13

• x = 2

• x = -2

• x = 11

• x = -10

Tags

CCSS.7.EE.B.4A