Can you help me solve this?

Acort Industries has 12 million shares outstanding and a current share price of $45 per share. It also has long-term debt outstanding. This debt is risk free, is four years away from maturity, has an annual coupon rate of 12%, and has a $118 million face value. The first of the remaining coupon payments will be due in exactly one year. The riskless interest rates for all maturities are constant at 7.2%.Acort has EBIT of $110 million, which is expected to remain constant each year. New capital expenditures are expected to equal depreciation and equal $13 million per year, while no changes to net working capital are expected in the future. The corporate tax rate is 45%, and Acort is expected to keep its debt-equity ratio constant in the future (by either issuing additional new debt or buying back some debt as time goes on).

a. Based on this information, estimate Acort's WACC.

b. What is Acort's equity cost of capital?