A corporation wants to calculate its weighted average cost of capital. The firm has an 8% pre-tax cost of debt and a 18% cost of common equity. The firm does not have preferred stock outstanding and has a target capital structure of 30% debt and 70% common equity, If the tax rate is 21%, what is the firm's WACC? Enter your answer using 3 decimal places if using decimal expression or 1 decimal place if using percent expression, eg, 0.123 or 12.3%