Please answer all parts, thank you in advance! :)

Problem 13-01 Calculate the Macaulay duration of an 8%, $1,000 par bond that matures in three years if the bond's YTM is 10% and interest is paid semiannually. You may use Appendix C to answer the questions. a. Calculate this bond's modified duration. Do not round intermediate calculations. Round your answer to two decimal places. years b. Assuming the bond's YTM goes from 10% to 9.0%, calculate an estimate of the price change. Do not round intermediate calculations. Round your answer to three decimal places. Use a minus sign to enter negative value, if any. %