Oxy Corporation uses debt, preferred stock, and common stock to raise capital. The firm's capital structure targets the following proportions: debt, \56; preferred stock, \15; and common stock, \29. If the cost of debt is \5.4, preferred stock costs \9.4, and common stock costs \11.2, what is Oxy's weighted average cost of capital (WACC)? Oxy's weighted average cost of capital (WACC) is \\%. (Round to two decimal places.)