Adjusted WACC. Lewis runs an outdoor adventure company and wants to know what effect a tax change will have on his company's WACC. Currently, Lewis has the following financing pattern: Equity: 42% and cost of 20.98% Preferred stock: 17% and cost of 14.67% Debt: 41% and cost of 11.8% before taxes What is the adjusted WACC for Lewis if the tax rate is What is the adjusted WACC for Lewis if the tax rate is