1) You need a new car and the dealer has offered you a price of $20,000, with the following payment options: (a) pay cash and receive a $2,000 rebate, or (b) pay a $5,000 down payment and finance the rest with a 0% APR loan over 30 months. But having just quit your job and started an MBA program, you are in debt and you expect to be in debt for at least the next 2 years. You plan to use credit cards to pay your expenses; luckily you have one with a low (fixed) rate of 13.59% APR. Which payment option is best foryou?

- Your monthly discount rate is ___%

2) The mortgage on your house is five years old. It required monthly payments of $1,450, had an original term of 30 years, and had an interest rate of 10% (APR). In the intervening five years, interest rates have fallen and so you have decided to refinance that is, you will roll over the outstanding balance into a new mortgage. The new mortgage has a 30-year term, requires monthlypayments, and has an interest rate of 6.625% (APR).

a. What monthly repayments will be required with the newloan?

b. If you still want to pay off the mortgage in 25 years, what monthly payment should you make after you refinance?

c. Suppose you are willing to continue making monthly payments of $1,450. How long will it take you to pay off the mortgage afterrefinancing?

d. Suppose you are willing to continue making monthly payments of $1,450 and want to pay off the mortgage in 25 years. How much additional cash can you borrow today as part of therefinancing?

4) Your uncle Fred just purchased a new boat. He brags to you about the low 6.9% interest rate (APR, monthly compounding) he obtained from the dealer. The rate is even lower than the rate he could have obtained on his home equity loan 7.9% APR, monthlycompounding). But if his tax rate is 25% and the interest on the home equity loan is tax deductible, which loan is trulycheaper?

- The after-tax cost on the home equity loan is ___%