Dickson, Incorporated, has a debt-equity ratio of 2.3. The firm's weighted average cost of capital is 9 percent and its pretax cost of debt is 5.3 percent. The tax rate is 24 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 company's weighted average cost of capital be if the firm's debtequity ratio were 75 ? What if it were 1.30 ? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.)