Walt is evaluating an investment that will provide the following returns at the end of each of the following years: year 1,$12,900; year 2, $10,400; year 3,$7,900; year 4, $5,400; year 5,$2,900; year 6 , $0; and year 7,$12,900. Walt believes that he should earn 12 percent compounded annually on this investment. Required: a. How much should he pay for this investment? b. How much should he pay if he expects to earn an annual return of 9 percent compounded monthly? Note: For all requirements, do not round PV factors and round your other intermediate calculations and final answer to the nearest whole dollar amount