Please answer the following question without rounding. Thank you

A store has a beta of 1.30. The yield on a 3-month T-bill is 4.5%. The market risk premium is 7.5% and the return on an average stock in the market last year was 12%. What is the estimated cost of common equity using CAPM?

Abalance sheet shows $250 million in debt, $50 million in preferred stock, and $300 million in total common equity. Shi's tax rate is 23%, r_d =8.5%, r_p = 9.87%, and r_s = 15.5%. If Shi has a target capital structure of 40% debt, 5% preferred stock and 55% common stock, what it its WACC?

A company has a target capital structure of 20% debt and 80% equity. The yield to maturity on the company's outstanding bonds is 5.7%, and the company's tax rate is 23%. Ortiz's CFO has calculated the company's WACC as 10.45%. What is the company's cost of equity capital?