How much would you have to invest today to receive: (Use a Financial calculator to arrive at the answers. Round the final answers to the nearest whole dollar.) a. $16,500 in 7 years at 11 percent? Present value $ b. $20,750 in 16 years at 11 percent? Present value $ c. $8,600 each year for 18 years at 12 percent? Present value $ d. $8,000 each year, at the beginning, for 40 years at 8 percent? Present value $ e. $69,000 each year for 20 years at 9 percent? Present value $ f. $69,000 each year for 20 years, at the beginning, at 9 percent? Present value $