mullineaux corporation has 30,000 shares of common stock outstanding at a market price of $15 a share. this stock was originally issued at $31 per share. the firm also has a bond issue outstanding with a total face value of $280,000 which is currently selling for 84 percent of par. the cost of equity is 13 percent while the after-tax cost of debt is 6.9 percent. the firm has a beta of 1.48 and a tax rate of 30 percent. what is the weighted average cost of capital?