If the interest rate is 10% compounded annually, what is the value of the following three investments? a. An investment that offers you $160 a year in perpetuity with the payment at the end of each year. (Round your answer to 2 decimal places.) b. A similar investment with the payment at the beginning of each year. (Do not round intermediate calculations. Round your answer to 2 decimal places.) c. A similar investment with the payment spread evenly over each year. (Do not round intermediate calculations. Round your