Posted by Kelitis on .
Lee Holmes deposited $15,000 in a new savings account at 9% interest compounded semiannually. At the beginning of year 4, Lee deposits an additional $40,000 at 9% intrest compounded semiannually. At the end of 6 years, what is the balance in Lee's account?

MATH HOMEWORK HELP PLEASE ANSWER 
marcus,
Erica invests $10,000 at 5% interest compounded annually.
How much interest will Erica earn in 3 years