7LRIS WS #21 Unit 5 Review

1) Carlos reads 8 1/3 pages in 5 minutes. What is his average reading rate in pages per minute?

Write your answer as a mixed number and label it pages/minute

2) Ashley rides her bike 8 miles in 50 minutes. What is her average biking rate in miles per minute?

Write your answer as a decimal and label it miles/minute.

3) Solve for n:

Write your answer like: n = 7.

4) Solve for x:

Write your answer like: x = 7

5) You can buy six burgers for $15. Write the UNIT RATE EQUATION that gives the cost per burger.

Write you answer like this:

y = the UNIT RATE x

5a) How much would it cost to buy 10 burgers?

Remember to include the dollar sign. example: $15

6) How much is earned in 1/2 an hour?

6) How much is earned in 2 hours?

6) If you have earned $27, then how many hours have you worked?

6) How much is earned in 7 hours?

6a) What does the point (4, 36) on the table and graph represent?

Write your answer like this:

$9 in 1 hour

6b) What is the unit rate?

Remember to label your answer like this: $3/hr

6c) Write the unit rate equation:

Write you answer like this:

y = the UNIT RATE x

6d) How much would you make in 40 hours?

Write answer like this: $1.25

7) Determine if the following two ratios are proportional. PROVE your answer on your paper.

8) Determine if the following two ratios are proportional. PROVE you answer on your paper.

9) Lin's sells a 6 oz. can of sliced pineapple for $0.90 and a 9 oz. can for $1.25. Which is the better buy?

Susie can make 48 cookies in 3 hours. How many cookies can she make in 7 hours?

Hint: Set up a proportion & solve.