$($Related to Checkpoint $9\mathrm{.}2$ and Checkpoint $9\mathrm{.}3)($Bond valuation$)$ The $8-$year $$1,000$ par bonds of Vail lnc$.$ pay $15$ percent interest. The markefs required yield to maturity on a comparable$-$risk bond is $17$ percent. The current market price for the bond is $$860$

a$.$ Determine the yield to maturity.

b$.$ What is the value of the bonds to you given the yield to maturity on a comparable$-$risk bond?

c$.$ Should you purchase the bond at the current market price?