1st Nine Weeks Review

Tags

CCSS.6.EE.A.3

Subtract the following polynomials: (3x² + 2x − 5) − (4x² – 3x − 4).

• −7x² + 5x + 9

• −x² + 5x − 1

• x² + 2x - 9

• 7x² - x - 9

Tags

CCSS.HSA.APR.A.1

A used bookstore sells all paperback books at the same price and offers a discount for purchases of more than 7 paperbacks. The expression 1.15(x − 7) + 14 represents the total cost in dollars of x paperback books for a customer buying more than 7 paperbacks. What number from this expression represents the cost in dollars of each additional paperback book after the first 7?

• 1.15

• 14

• 1.15x

• 1.15x - 7

Tags

CCSS.HSF.LE.B.5

The initial volume of water in a certain pond is 2,000 m³. Each day 0.5 m³ is drained from the pond. What does the expression 2000 - 0.5x represent?

• The volume of water in the pond after x days

• The number of days it will take to completely drain the pond

• The total volume of water drained from the pond during x days

• The time it will take to drain half of the volume of water from the pond

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A scientist is going to measure how fast the height of a bamboo plant is increasing. Select three units the scientist could use to describe the rate.

• months

• inches

• inches per week

• inches per month

• centimeters per day

Tags

CCSS.HSF-LE.A.1B

A teacher plans to buy pizza for her 25 students, and she wants each student to get at least one piece of pizza. Each pizza costs $7.00, and there are many toppings to choose from. Which quantity would be most useful in determining how many pizzas the teacher should buy?

• number of pieces per pizza

• number of toppings

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

Loraine is estimating the length of her house. Which unit of measurement would be an appropriate level of accuracy for her estimation?

• millimeter

• centimeter

• meter

• kilometer

Tags

CCSS.HSN.Q.A.1

CCSS.HSN.Q.A.3

Mary is solving the equation 2x − 4(2x + 3) = 3(−x + 2) — 3. In her first step, she rewrites the equation as 2x − 8x - 12 = -3x - 6 - 3. What error did Mary make, if any?

• Mary did not multiply/divide both sides correctly.

• Mary did not add/subtract from both sides correctly.

• Mary did not distribute correctly.

• Mary did not make an error.

Tags

CCSS.8.EE.C.7B

Samuel needs to solve the equation 4(x - 2) + 2 = 4x - 8. Which equations represent a first step Samuel could use to solve the original equation? Select two.

• Samuel distributes 4 on the left side of the equation to get 4x - 8 + 2 = 4x - 8.

• Samuel distributes 2 on the left side of the equation to get 4(2x - 4) = 4x - 8.

• Samuel divides both sides of the equation by 4 to get x - 2 + 2 = x -2.

• Samuel subtracts 2 from both sides of the equation to get 4(x - 2) = 4x - 10.

• Samuel subtracts 4 from both sides of the equation to get x - 2 + 2 = 4x - 12.

Tags

CCSS.HSA.REI.A.1

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.CED.A.1