Investment X offers to pay you $5,500 per year for nine years, whereas Investment Y offers to pay you $8,000 per year for five years. a. Calculate the present value for Investments 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 Investments 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.)