You are analyzing the cost of debt for a firm. You know that the firm's $14-$year maturity, $8\mathrm{.}2$ percent coupon bonds are selling at a price of $$847\mathrm{.}00.$ The bonds pay interest semiannually. If these bonds are the only debt outstanding, answer the following questions.

Problem $13\mathrm{.}17$ a$1-$a$2($a$1)$