the market portfolio is $7\mathrm{.}80\%.$ The company's effective tax rate is $30\%.$ Its optimal capital structure is $60\%$ debt and $40\%$ equity.

a$.$ If Thunderhorse's beta is estimated at $1\mathrm{.}30,$ what is Thunderhorse's weighted average cost of capital?

a$.$ If Thunderhorse's beta is estimated at $1\mathrm{.}30,$ what is Thunderhorse's weighted average cost of capital?

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

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