Jones com had a target capital structurr of 40% debt, 10% preferred stcik, and 50% common equity. the company after tax cost of debt is 6.2%. its cost of preferred stock is 9.0%. its cost of retain earning is 16.6% and its cost of bew common stock is 23.6%. the compsny beta of 1.7 and marginal tax rate is 40%. what is WACC?