The following information comes from the Galaxy Corporation balance sheet. The value of common stocks is $12,000, retained earnings equals $3,000, total common equity equals $15,000, preferred stock has a value of $3,000 and long-term debt totals $12,000. If the cost of common equity is 9.0%, the cost of preferred shares is 12.0%, the cost of debt is 10.0%, and the firm has a corporate tax rate of 25.0%, what is the firm's WACC adjusted for taxes?

no excel please