Kendall Corporation has no debt but can borrow at $7\mathrm{.}25$ percent. The firm$$s WACC is currently $13$ percent, and there is no corporate tax.

What is the company$$s cost of equity?

Note: Do not round intermediate calculations and enter your answer as a percent rounded to the nearest whole number, e$.$g$.,32.$

If the firm converts to $25$ percent debt, what will its cost of equity be$?$

Note: Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

If the firm converts to $55$ percent debt, what will its cost of equity be$?$

Note: Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

What is the company$$s WACC in parts $($b$)$ and $($c$)?$