Fin Alg Types of Interest

April invests $300 at a 4.5% rate in an account that earns simple interest. How much interest will she earn after 2 years?

Lex has $1,780.80 in his savings account that he opened 6 years ago. His account has an annual interest rate of 6.8% compounded annually. How much money did Lex use to open his savings account?

Ron and Amie opened an educational savings account for their daughter when she was born making a $5,000 initial investment. They were unable to ever add anything else to the account. What was the interest rate if they had $10,000 in the account after 12 years?

Doug invested $2,500 into a CD that compounds annually for 10 years. If his money doubled in that time, what was the interest rate on the CD?

An investment earns 3% each year and is compounded monthly. Calculate the total value after 6 years from an initial investment of $5,000.

If you deposit $4000 into an account paying 6% annual interest compounded quarterly, how much money will be in the account after 5 years? 

Isabella deposited $500 into a savings account at a local bank that earned 5% interest. How much interest does she earn per year?

Find the annual percentage yield of an account with an APR of 5.6% compounded monthly.

Mark invested $2,000 in a savings account with an annual interest rate of 3.5% compounded annually. How much will he have in the account after 4 years?

Emily invested money into an account with 6% interest that compounds annually. If she deposited $1,500, how long will it be before she doubles her investment?