Please assist with the below and show work

10-6 [30pts] Essex Biochemical Co. has a $1,000 par value bond outstanding that pays 15 percent annual interest. The current yield to maturity on such bonds in the market is 18 percent. Compute the price of the bonds for the following maturity dates: a. 30 years b. 20 years c. 4 years at the ann nf the year . The