a. If the discount rate is 7 percent, what is the future value of these cash flows in Year 4 ? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16. b. What is the future value at an interest rate of 13 percent? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16. c. What is the future value at an interest rate of 22 percent? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16