Exercice 4: a. You are making car payments of $315/month for the next 3 years, you know that your car loan has an interest rate of 12.4%, discounted monthly, what was the initial price of the car? b. What is the present value of an annuity of $2,000 per year, with the first cash flow received three years from today and the last one received 8 years from today? Use a discount rate of eight percent. c. A 10-year annuity pays $900 four times in year. The first $900 will be paid five years from now. If the stated interest rate is eight percent, discounted quarterly, what is the present value of this annuity