You were hired as a consultant to Quigley Company, whose target capital structure is 35% debt, 10% preferred, and 55% common equity. The interest rate on new debt is 6.50%, the yield on the preferred is 6.00%, the cost of retained earnings is 13.25%, and the tax rate is 40%. The firm will not be issuing any new stock. What is Quigley's WACC? (Hint: Note that the cost of debt, the interest, is tax deductible, but preferred stock and common stock costs are not.)