1) In the market, a company's debt trades at a yield of 6.0%. Its tax rate is 25%. What is the company's after-tax cost of debt? 2) A preferred stock pays a dividend of $8.00 a year. Its current price is $120. What is the cost of preferred stock in its weighted average cost of capital? 3) A company's dividend yield is 4.0%. Its growth rate is 4.0%. Using the formula: r=(D/P)+g, determine the equity cost of capital