The market value of? Fords' equity, preferred stock and debt are $ 6 ?billion,$ 3 ?billion, and $ 10 ?billion, respectively. Ford has a beta of 1.8?, the market risk premium is 6?%, and the? risk-free rate of interest is 5?%. ? Ford's preferred stock pays a dividend of $ 2.50 each year and trades at a price of $ 29 per share. ? Ford's debt trades with a yield to maturity of 10?%. What is? Ford's weighted average cost of capital if its tax rate is 40?%?