What is the future value of $100 deposited in an account for four years paying a 6 percent annual rate of interest, compounded semiannually?

What is the future value of an ordinary annuity of $2,000 each year for 10 years, invested at 12 percent?

Gina has planned to start her college education four years from now. To pay for her college education, she has decided to save $1,000 a quarter for the next four years in an investment account expected to yield 12 percent. How much will she have at the end of the fourth year? (Assume quarterly compounding.)