1. Alejandro bought a television set for $900 and paid a sales tax of 8%. How much did he pay for the television set? 2. Eric went to Best Buy and bought $3000 worth of electronics. The sales tax was 7%. What was the total cost of the items after tax?

3. Rosa and her friends are eating out for dinner. The bill was $45.80. If they leave a 20% tip, how much was the total bill?

4. Tom wanted to buy a new phone. The original price was $600. He found one on sale for 20% off. How much is the phone now?