Chapter 5 and 7.5 Review

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound
• $5 per pound
• $35 per pound
• 0.125 pounds per dollar

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

• 102 words per minute
• 100 words per minute
• 400 words per minute
• 412 words per minute

Mr. Dulin runs 5 miles in 42 minutes.  He plans to run in a 25 mile race.  Based on his current speed, about how long will it take him to complete the race?

• 210 minutes
• 8.4 minutes
• 1050 minutes
• 200 minutes

Last week, Ida bought 8 cartons of raspberries for $7. How many cartons of raspberries can Ida buy this week if she has $21?

• 24 cartons
• 2.67 cartons
• 20 cartons
• 19 cartons

Solve for x 

• x = 16
• x = 28
• x = 1/26
• x = 26

Solve the proportion:

• 4
• 8
• 14
• 10

The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?

• 32 People
• 32 Min.
• 12.5 Min.
• 12.5 People

What is the constant of proportionality? 

• 1/3
• 3
• 5
• 10

What is the constant of proportionality? 

• 45 mph
• 90 mph
• 135 mph
• 2 mph

A proportional relationship can be written as an equation in the form:

• y = k+x
• y = k-x
• y = kx
• y = k/x