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. $12,000 in 6 years at 12 percent? Present value SO b. $15,000 in 15 years at 8 percent? Present value $ c. $5,000 each year for 10 years at 8 percent? $ Present value d. $5,000 each year, at the beginning, for 10 years at 8 percent? Present value $ e. $50,000 each year for 50 years at 7 percent? Present value $ f. $50,000 each year for 50 years, at the beginning, at 7 percent? Present value $