Palencia Paints Corporation has a target capital structure of 35% debt and 65% common equity, with no preferred stock. Its before-tax cost of debt is 9%, and its marginal tax rate is 40%. The current stock price is P₀ = $30.50. The last dividend was D₀ = $3.75, and it is expected to grow at a 4% constant rate. What is its cost of common equity and its WACC? Round your answers to two decimal places. Do not round your intermediate calculations.

a. r_s = %

b. WACC = %