Williamson, Inc., has a debt-equity ratio of 2.44. The company's weighted average cost of capital is 9 percent, and its pretax cost of debt is 7 percent. The corporate tax rate is 21 percent.

a. What is the company's cost of equity capital? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

b. What is the company's unlevered cost of equity capital? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

c. What would the weighted average cost of capital be if the company's debt-equity ratio were .60 and 1.75? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.)

a. Cost of equity ? %

b. Unlevered cost of equity ? %

c. WACC at debt-equity ratio of .60 ? %

WACC at debt-equity ratio of 1.75 ? %