Patton Paints Corporation has a target capital structure of 40% debt and 60% common equity, with no preferred stock. Its before-tax cost of debt is 13% and its marginal tax rate is 40%. The current stock price is P0 = $22.00. The last dividend was D0 = $4.00, and it is expected to grow at a 8% constant rate. What is its cost of common equity and its WACC?