Levering the required return on equity with Hamada, MM, and APV Nodebt, Inc., has zero debt (wd=0). It is considering restructuring to increase its percentage of debt to wd=40%. Its beta is 0.8 , the risk-free rate is 7%, the market risk premium is 9%, and if it restructures, the required return on its debt will be 12%. Nodebt's tax rate is 25%. a. Using the Hamada equation, calculate Nodebt's required return on equity after the recapitalization. Do not round intermediate calculations. Round your answer to two decimal places. % b. Using the MM model with corporate taxes (Equation 17-16) calculate Nodebt's required return on equity. Do not round intermediate calculations. Round your answer to two decimal places. % c. Using the APV model, calculate Nodebt's required return on equity. Do not round intermediate calculations. Round your answer to two decimal places. %