$($Individual or component costs of capital$)$ Compute the cost of capital for the firm for the following

a$.$ Currently bonds with a similar credit rating and maturity as the firm's outstanding debt are selling to yield $7\mathrm{.}24$ percent while the borrowing firm's corporate tax rate is $34$ percent.

b$.$ Common stock for a firm that paid a $$1\mathrm{.}08$ dividend last year. The dividends are expected to grow at a rate of $5\mathrm{.}1$ percent per year into the foreseeable future. The price of this stock is now $$25\mathrm{.}42.$

c$.$ A bond that has a $$1,000$ par value and a coupon interest rate of $12\mathrm{.}1$ percent with interest paid semiannually. A new issue would sell for $$1,154$ per bond and mature in $20$ years The firm's tax rate is $34$ percent.

d$.$ A preferred stock paying a dividend of $6\mathrm{.}1$ percent on a $$105$ par value. If a new issue is offered, the shares would sell for $$86\mathrm{.}61$ per share

a$.$ The after$-$tax c

ost of debt debt for the firm is

$\%.($Round to two decimal places$)$