Holiday House Tech has a target capital structure of $35\%$ debt and $65\%$ common equity. Holiday House does not issue preferred stock. The yield to maturity on the company$$s outstanding bonds is $7\%,$ and the company$$s tax rate is $22\%.$ Holiday House$$s CFO has calculated the company$$s WACC as $8\mathrm{.}9\%.$ What is the company$$s cost of common equity capital?