Brown Industries has a debt-equity ratio of .9. Its WACC is 7 percent, and its cost of debt is 4 percent. There is no corporate tax.

a. What is the companys 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-1. What would the cost of equity be if the debt-equity ratio were 2? (Do not round intermediate calculations and enter your answer as a percent rounded to the nearest whole number, e.g., 32.)

b-2. What would the cost of equity be if the debt-equity ratio were .7? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

b-3. What would the cost of equity be if the debt-equity ratio were zero? (Do not round intermediate calculations and enter your answer as a percent rounded to the nearest whole number, e.g., 32.)

a: cost of equity :
b-1: cost of equity
b-2: cost of equity
b-3: cost of equity