Mr. Perkins is replacing his computer and monitor. The new computer costs $699.99 including tax, and the new monitor costs $199.99 including tax. Mr. Perkins signs up for a special deal to pay for the total amount in 12 equal monthly payments without interest. Which of the following is a reasonable amount for each monthly payment?

A. $17
Incorrect. This would be the monthly payment for the monitor alone.

B. $42
Incorrect. You subtracted the price of the monitor from the price of the computer. You need to add the two prices.

C. $58
Incorrect. This would be the monthly payment for the computer alone.

D. $75
Correct! This is would be the monthly payment for the monitor and computer together.

Samantha is working after school mowing lawns. She earns $15 for every lawn she mows. In a week, she mows between 7 and 9 lawns. Which of the following is a possible amount that she could earn in a week?

A. $90
Incorrect. This would be how much she gets paid for mowing 6 lawns.

B. $120
Correct! This is how much she would be paid for mowing 8 lawns.

C. $150
Incorrect. This would be how much she gets paid for mowing 10 lawns.

D. $165
Incorrect. This would be how much she gets paid for mowing 11 lawns.

Steve is training for a bike race in thirty days. Every day he rides his bike between 15 and 20 miles. Which of the following is a possibility for his total number of miles that he can ride in a month?

A. 300 miles
Incorrect. This amount is too low for the total number of miles.

B. 400 miles
Incorrect. This amount is too low for the total number of miles.

C. 600 miles
Correct! This amount falls in the range of possible totals.

D. 700 miles
Incorrect. This amount is too high for the total number of miles.

Ms. Martinez is working on her home budget for her family. She looks at the amount that she paid for her cell phone plan and sees that it is $124.99 per month for the whole family. Based on this information, she budgets $1500 for the year. Which best describes her estimate?

A. Too low because she rounded to the nearest $100
Incorrect. If she had rounded to the nearest $100, the estimate would have been $1200, not $1500.

B. Too high because she rounded to the nearest $100
Incorrect. If she had rounded to the nearest $100, the estimate would have been $1200, not $1500.

C. Accurate because she rounded to the nearest $25
Correct! She rounded to the nearest $5 and made an accurate estimate.

D. Too low because she rounded to the nearest $25
Incorrect. She did round to the nearest $5, but her estimate is accurate.

Allen is reading a 310 page book for his English class. He can read between 40 and 50 pages per day. At this rate, what is a reasonable number of days it will take him to finish the book?

A. Between 6 and 8 days
Correct! This is a reasonable answer.

B. Between 8 and 10 days
Incorrect. He will finish in fewer than 8 days.

C. More than 10 days
Incorrect. He will finish in fewer than 10 days.

D. Fewer than 6 days
Incorrect. It will take him more than 6 days.