9.After your down payment on a new house, you will owe $120,000. You agree to pay off this balance in equal monthly payments for the next 25 years. If interest is 12% compounded monthly, what will be the amount of each monthly payment? How much interest have you paid?

10.You plan to take a world cruise five years from now and you estimate you will need $8,000. You wish to acquire this amount be making equal annual deposits into an account which pays 6% compounded annually. Find the amount of each deposit?

11.How much should be deposited now at 8% compounded semiannually to make possible equal withdrawals of $5,000 at the end of each year for six years, the first withdrawal to be made 10 years from now? Assume an ordinary annuity for the withdrawal period with interest to be 7% compounded annually.