You have $15,500 you want to invest for the next 36 years. You are offered an investment plan that will pay you 6 percent per year for the next 18 years and 10 percent per year for the last 18 years. a. How mych will you have at the end of the 36 years? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16 . b. If the investment plan pays you 10 percent per year for the first 18 years and 6 percent per year for the next 18 years, how much will you have at the end of the 36 years? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16