Afirm's total assets are $1791 min. The firm funds the assets with 200 min of debt. $61 min of preferred stock and the remainder with common equly. What is the firm's WACC if its pre-tax cost of debt is 646, cost of preferred stock is 7,9%, cost of common equity is 15.6%, and the tax rate is 284? Express your answer in to the nearest 0.01% drop the symbol