How to calculate this with excel ( need the formulas)

9. What is the present value factor in five years at 10 percent?

10. What is the present value of receiving $50,000 in five years at 10 percent?

11. What is the future value factor in seven years at 12 percent?

12. What is the future value of $30,000 in seven years at 12 percent?

13. What is the mortgage constant of a 30-year fixed-rate mortgage with monthly payments at 5 percent?

14. What is the monthly mortgage payment of a 30-year fixed-rate mortgage of $100,000 at 5 percent?

15. What is the value of a 20-year mortgage with monthly payments of $824.95 at 5 percent?

16. What is the value of a 20-year mortgage with monthly payments of $824.95 at 3 percent?

17. What is the value of a 20-year mortgage with monthly payments of $824.95 at 7 percent?

18. Suppose you borrow $325,000 at six percent for 30 years with monthly payments. What is the payoff (balloon payment) in three years?

19. Suppose you borrow $325,000 at six percent for 30 years with monthly payments and a prepayment penalty of 2 percent. What is the payoff (balloon payment) in three years?

20. What is the monthly payment in year six of an adjustable-rate mortgage where $350,000 is borrowed at an interest rate of 4.5 percent for the first five years that resets to 6 percent in year six?