IM Unit 4 Test Review

Priya has a recipe for banana bread. She uses 7 and 1/2 cups of flour to make 3 loaves of banana bread. Andre will follow the same recipe. He will make b loaves of banana bread using f cups of flour. Which of these equations represents the relationship between b and f?

• A

• B

• C

• D

Diego measured the length of a pen to be 22 cm. The actual length of the pen is 23 cm. Which of these is closest to the percent error for Diego’s measurement?

• 4.3%

• 4.5%

• 95.7%

• 104.5%

A car is 180 inches long. A truck is 75% longer than the car. How long is the truck?

• 135 inches

• 240 inches

• 255 inches

• 315 inches

A circular running track is 1/4 mile long. Elena runs on this track, completing each lap in 1/20 of an hour. What is Elena’s running speed? Include the unit of measure.

Today, everything at a store is on sale. The store offers a 20% discount.

a. The regular price of a T-shirt is $18. What is the discount price?

Today, everything at a store is on sale. The store offers a 20% discount.

b. If the regular price of an item is x dollars, what is the discount price in dollars?

• 4/5x

• 5/4x

• (x - 0.2x)

• 0.8x

• 0.2x

Today, everything at a store is on sale. The store offers a 20% discount.

c. The discount price of a hat is $18. What is the regular price?

Lin’s father is paying for a $20 meal. He has a 15%-off coupon for the meal. After the discount, a 7% sales tax is applied. What does Lin’s father pay for the meal? Explain or show your reasoning.

Which of the following will increase the final total? Select all that apply.

• Sales tax

• Discount

• Markup

• Tip (gratuity)

• Markdown

A graduated cylinder actually contains 7.5 milliliters of water. When Han measures the volume of the water inside the graduated cylinder, his measurement is 7 milliliters. Which of these is closest to the percent error for Han’s measurement?

• 107.1%

• 93.3%

• 7.1%

• 6.7%