Compound Interest

Lee Holmes deposited $15,000 in a new savings account at 9% compounded semi-annually. At the beginning of year 4, Lee deposits an additional $40,000 at 9% compounded semi-annually. At the end of 6 years, what is the balance in Lees account?

Lee Wills loaned Audrey Chin $16,000 to open a hair salon. After 6 years, Audrey will repay Lee with 8% interest compounded quarterly. How much will Lee receive at the end of 6 years?

Pete Air wants to buy a used Jeep in 5 years. He estimates the Jeep will cost $15,000. Assume Pete invests $10,000 now at 12% interest compounded semi-annually. Will Pete have enough money to buy his Jeep at the end of 5 years? Enter the amount he will have at the end of 5 years.