Unit 4 Review - Solving Percent Problems

Unit 4 Review - Using Proportional Relationships to Solve Percent Problems

Complete work in your notebooks.

Keep it organized so you can refer back to it during the test.

Multiple Choice

1. Chelsea got her haircut last weekend. If the hairstylist charged $17 and Chelsea gave her a 15% tip, how much did she pay for the haircut?

• $35

• $19.55

• $17.55

• $2.55

Multiple Select

Seven years ago, Trevor opened a savings account with his credit union. He started with a balance of $432 and has not made any withdrawals or deposits since then. He made an interest of 6% each year on the amount he originally put in. Select ALL the true statements.

• Trevor has accrued $181.44 in interest.

• Trevor has accrued $1814.40 in interest.

• Trevor has a new amount of $613.44 in his savings account.

Open Ended

A window washing service that has charged $18.00 per hour in the past is increasing its rate by 5% to cover increased cost of materials. What is the new rate? Include all necessary work to support your answer.

Open Ended

The graph below shows a proportional relationship between the number of photos and the total cost to print them.

Part A: What is the constant of proportionality for this relationship? Include all necessary work to support your answer.

Open Ended

The graph below shows a proportional relationship between the number of photos and the total cost to print them.

Part B: Explain what this means in terms of the cost of printing photos.

Multiple Choice

A science test has 24 problems on it. If a student incorrectly answers 3 problems on the test, what percentage of the problems are correct?

• 12.5%

• 24%

• 87.5%

• 97%

Fill in the Blanks

Multiple Choice

The cost of a ticket to a basketball game last week was $80. This week's basketball ticket is $120. The percent of change from last week to this week is

• 0%

• 30%

• 40%

• 50%

Multiple Choice

In 2007, the average cost of milk was $3.16 per gallon. In 2017 the average cost of milk was $3.87 per gallon. Suppose the cost of milk is expected to increase by the same percentage with each passing decade. Select the response that is true.

• The cost of gasoline in 2027 will be $4.72.

• The percent of increase from 2007-2017 is 18%.

• The percent of increase from 2007-2017 is 22%.

• The increase in the cost of milk from 2027 will be exactly the same as the increase from 2007 to 2017.

Multiple Select

A pair of shoes cost $40 and go on sale for 30% off. Select the amount that was discounted AND the final price after the discount.

• $10 discount

• $12 discount

• The shoes cost $28

• The shoes cost $30

Multiple Select

Exit Ticket Poll:

How ready are you for the Unit 4 Test?

• Red - I need help!

• Yellow - I need a little more review!

• Green - I'm ready!