can someone please explain how they got these answers.

Contingent Corp has $15 million of debt outstanding. It has a coupon rate of 8% and pays coupons twice a year. The debt matures in 10 years and is priced at 97% of par value. What is the YTM of the debt? 8.45% What is the effective annual return on the debt? r_D = 8.63% If the tax rate is 35%, what is the effective cost of debt? r_D(1 - T_c) = 5.61% What is the market value of Contingent Corp's debt? D = $14.55 million Contingent Corp's stock has a beta of 2 and you estimate the market risk premium to be 5%. If the risk-free rate is 3 percent, what is the cost of equity? r_E = 13% If Contingent Corp equity has a market capitalization of $20 million. What are the weights of equity and debt financing? E% = 57.89% D% = 42.11% What is the weighted average cost of capital for Contingent Corp? r_WACC - 9.89%