1). calculate the following values. a. the present value of $100 received in year 10 at 11% discount rate, b. the present value of $100 received in year 15 at a 17% discount rate c. the present vaulue of $100 received in each year 1 through year 20 at a 22% discount rate d. the present value of $100 received in each 3 through year 12 at a 13% discount rate.