Investment X offers to pay you $4,200 per year for eight years, whereas Investment Y offers to pay you $6,100 per year for five years. a. Calculate the present value for Investment X and Y if the discount rate is 5 percent. (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) b. Calculate the present value for Investment X and Y if the discount rate is 15 percent. (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) Present value of Investment X at 5 percent Present value of Investment Y at 5 percent Present value of Investment X at 15 percent Present value of Investment Y at 15 percent