Jenny Lopez is planning next year's capital budget. It is at its optimal capital structure, which is 40 percent debt and 60 percent common equity, and the company's earnings and dividends are growing at a constant rate of 11 percent. The last dividend, Do, was $2.00, and the companys stock currently sells at a price of $18 per share. The firm can raise debt at a 7 percent before-tax cost. If the firm issues new common stock, an 8 percent flotation cost will be incurred. The firm's marginal tax rate is 25 percent.

Calculate Weighted Average Cost of Capital (WACC) for the firm, assuming the firm is issuing new common stock and no preferred stock.