need help with steps on how to solve please, will upvote. this is a two part question please. it follows chegg guidlines

PART 1 - Michael purchased a Treasury bond with a coupon rate of 4.89% and face value of $100. The maturity date of the bond is 15 March 2029.

(a) Sam plans to purchase Michael's Treasury bond on 11 September 2021. What price will Yuri pay (round to four decimal places)? Assume a yield of 4.01% p.a. compounded half-yearly. Round your answer to four decimal places.

a. 105.9238

b. 108.0499

c. 105.6060

d. 105.6036

PART 2

Michael purchased a Treasury bond with a coupon rate of 4.89% and face value of $100. The maturity date of the bond is 15 March 2029.

(b) In fact, Sam changes his plan and Michael plans to sell this bond on 6 January 2022. What was Michael's sale price (rounded to four decimal places)? Assume a yield of 4.01% p.a. compounded half-yearly.

a. 104.5423

b. 107.2934

c. 106.9691

d. 104.8665