Math Review

Lacey bought a new purse that originally cost $25 and is on sale for $15. Find the percent of change in the price in the purse.

• Decrease of 40%
• Decrease of 10%
• Decrease of 30%
• Decrease of 20%

Tags

CCSS.6.RP.A.3C

The simple interest formula is I=Prt.  What does the P represent?

• Principle
• Interest

• Percent

• Rate

Tags

CCSS.8.EE.C.7B

Consider the expression 6r - r + 8(15 - r) + 23 - 6.

Is -3r + 137 equivalent to the given expression?

• It is equivalent.

• It is not equivalent.

Tags

CCSS.7.EE.A.1

An inequality is shown: 2x - 2 < 4.

What values of x make the inequality true?

• x > 3

• x < 1

• x < 3

• x > 1

Tags

CCSS.6.EE.B.5

A furniture store sells kits that customers use to build cabinets. Each kit contains 18 screws and a set number of boards. Jarred buys 6 of these kits and has a total of 192 screws and boards.

This equation represents the situation:

6(x + 18) = 192

What does the variable x represent in Jarred's equation?

• the number of screws in one kit

• the number of boards in one kit

• the number of screws in all 6 kits

• the number of boards in all 6 kits

Tags

CCSS.7.EE.B.4A

Julie works Sunday, Monday, and Wednesday for 10 hours each day. On Tuesday, Thursday, and Friday, she works 7 hours each day. She does not work on Saturday. Her weekly total earnings are $612.

What is Julie's hourly rate of pay in dollars?

(Hint: Find how many hours she worked in total first.)

• $11

• $15

• $10

• $12

Tags

CCSS.6.EE.B.7

The sum of a number, n, and 8 is multiplied by -4 and the result is -12. What is the number?

• n = -5

• n = 5

• n = 1

• n = 11

Tags

CCSS.7.EE.B.4A

The average rate of hair growth is 2.5 centimeters every 2 months. At that rate, how many months will it take to grow 22.5 centimeters of hair?

(Hint: Make a proportion)

• 9 months

• 18 months

• 11 1/ 4 months

• 28 1/8 months

Tags

CCSS.7.RP.A.3

A satellite is 18 meters wide. A model of it was built with a scale of 1 centimeter: 3 meters.

How wide is the model?

(Hint: Make a proportion)

• 6 meters

• 54 meters

• 6 centimeters

• 54 centimeters

Tags

CCSS.7.G.A.1

The points on the coordinate grid represent the costs for the different numbers of peaches.

Select all statements that are true about the graph.

• There is a proportional relationship between the number of peaches and the cost because a line can be drawn passing through the origin and connecting all the points shown.

• There is a proportional relationship between the number of peaches and the cost because the x-value is always greater than the y-value.

• The point (1, 0.75) can be used to represent the unit rate of 0.75 dollars per peach.

• The point (1, 0.75) can be used to determine the total cost by subtracting 0.25 from the number of peaches.

• The point (4,3) represents the cost of $4 for 3 peaches.

Tags

CCSS.8.EE.B.5