Walt is evaluating an investment that will provide the following returns at the end of each of the following years: year 1, $13,000; year 2 , $10,500; year 3,$8,000; year 4,$5,500; year 5,$3,000; year 6,$0; and year 7,$13,000. 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