percent change, sales tax, commission and tip

Sara paid $6.75 in sales tax on an item that cost $90.00 before tax. At that rate, how much would she pay in sales tax for an item that costs $120.00 before tax?

• $8.00
• $12.00
• $9.00
• $10.00

A real estate agent earns a 5% commission on the sale of a house. If the agent sold a house for $350,000, how much did they earn in commission?

• $175,000
• $35,000
• $3,500
• $17,500

The Johnson family went to a restaurant. Mr. Johnson ordered a meal for $12.99, Mrs. Johnson ordered a meal for $15.75, and their three kids ordered kids' meals for $5.49 each. They left a 15% tip. How much was the bill, including the gratuity (excluding tax)?

• $47.99
• $55.99
• $60.99
• $51.99

A smartphone that cost $699 last month now costs $749. What is the percent of change in price rounded to the nearest tenth?

• 6.5%
• 7.2%
• 8.1%
• 9.7%

The price of a book was $19.99 in 2019 and increased to $24.99 in 2020. What is the percent change in price rounded to the nearest whole percentage from 2019 to 2020?

• 25
• 35
• 30
• 20

After a famous chef made a guest appearance at a restaurant, dessert sales increased by 250%. If the restaurant typically sells about 60 desserts per day, how many were sold on the day of the 250% increase?

• 75
• 175
• 225
• 150

In a school play, Emily sold about 15% fewer tickets than Liam. If e is the number of tickets Emily sold, and l is the number of tickets Liam sold, which expressions can determine how many tickets Emily sold?

• e = l - 0.15
• e = l - 0.15l
• e = l + 0.15l
• e = l - 0.85l

Linda wants to buy a laptop that's originally priced at $900, and it's on sale for 10% off. There is a 7% sales tax in her area. Calculate the final price she will have to pay for the laptop, including the discount and sales tax.

• $900.00
• $866.70
• $800.00
• $950.00

Alex wants to go to a restaurant where the meal he wants to order costs $45. The sales tax rate is 6%, and he plans to leave a 20% tip for the service. Alex has $60. Does he have enough money to cover the meal, tax, and tip?

• Maybe
• Yes
• No
• Not sure

A salesperson earns a 6% commission on her sales. This month the salesperson had $12,000 in sales. What amount of commission, in dollars, did she earn?

• $7,200
• $1,200
• $600
• $720