Percent Error and Interest

Zach​'s savings account earns 2.5​% simple interest per year. The balance in his savings account at the beginning of the year is ​$1,200. If Zach makes no deposits or withdrawals for a whole​ year, which is closest to the balance he should have in his savings account at the end of the​ year?

• $3,000

• $30

• $1,450

• $1,230

Edward deposited $4,000 into a savings account 4 years ago. The simple interest rate is 2%. How much money did Edward earn in interest? What is his new account balance? YOU WILL CHOOSE 2 ANSWERS.

• $320

• $3,200

• $3,680

• $4,320

• 1,280,000

You estimate that 200 people attend a school concert. The actual attendance was 240.   What is the percent error?

• 20%

• 18%

• 16%

• 17%

You guessed that the Chicago Cubs would win 95 games during the regular season. They actually won 103. What was your percent error? Round to the nearest tenth if necessary.

• 7.8%

• 7.7%

• 0.77%

• 0.78%

You guess that Lebron James would score 35 points during the game. He actually scored 28. Find your percent error.

• 30%

• 33%

• 75%

• 25%

Sofia deposited $1,700 into a savings account that accumulates 1.8% interest. If she keeps the money in the account for 7 years, how much money will be in the account?

• $214.20

• $1,914.20

• $21,420.00

• $23,120.00

Emilio borrows $1200 from a bank with 8% simple interest per year.  How much will he have to pay back total in 2 years?

• $150

• $192

• $1350

• $1392

Miss Sylvie miscounted and thought she saw 33 children on the bus. When she counted again, she realizes there are actually only 30 students on the bus. What is her percent error?

• 10%

• 9%

• 90%

• 91%