Review Percent Applications

The price of a graphing calculator is $80.  The sales tax is 7%.  What is the total cost of the calculator?

• $5.60
• $85.60
• $87.00
• $6.00

An amount of $4,000 is invested.  The interest rate is 2%.  What is the amount earned in one year?

• $80
• $420
• $800
• $4,080

Ariana buys an ant farm from a store near her home.  The ant farm's price is $12, and is on sale for 20% off.  The sales tax is 8.75%.  What is the total amount Ariana paid for the ant farm?

• $9.60
• $13.05
• $10.44
• $10.00

You and your friends are going out to dinner.  Your bill was $74.56.  You decide to leave a tip of 18%.  How much tip did you leave?

• $13.42
• $13.41
• $87.98
• $87.97