Percent Error and Simple 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?

Suppose you deposited $600 in a savings account 3 years ago. The simple interest rate is 3.1%. The interest that you earned in those 3 years is $55.80. Which of the following is/are true? YOU MAY CHOOSE MORE THAN ONE ANSWER

Suppose you deposit $700 in a bank with a simple interest rate of 3.4%. You want to keep your deposit in the bank long enough to earn at least $150 in interest. How long should you keep your deposit in the bank? ROUND UP TO THE NEXT FULL YEAR. ONLY TYPE THE NUMBER.

(a)  

Find the principal if you earn $5.25 in interest after 21 months and the simple interest rate was 2.0%.

DO NOT TYPE A DOLLAR SIGN.

(a)  

Christian opened a savings account with $3250. His account will earn 5.2% simple interest. How much money will be in his account after 6 years?

The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?

The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

The deer population is estimated to be 17,600 in northern Illinois, but an actual count was 21,300. What is the percent error?

Bob estimates that there will be 230 people who attend the concert. There was an actual total of 300 people who attended. Find the percent error.

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