Shadow Corp. has no debt but can borrow at 5.5 percent. The firms WACC is currently 9 percent and the tax rate is 21 percent. a. What is the companys cost of equity? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) b. If the firm converts to 40 percent debt, what will its cost of equity be? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) c. If the firm converts to 70 percent debt, what will its cost of equity be? (Do not round intermediate calculations and enter your answer as a percent rounded