I need help answering the middle question but if you could verify the other questions are correct I would appreciate it!!

Thank you!

Globo-Chem Co. currently has a capital structure consisting of 40% debt and 60% equity. However, Globo-Chem Co.'s CFO has suggested that the firm increase its debt ratio to 50%. The current risk-free rate is 3.5%, the market risk premium is 8%, and Globo-Chem Co.'s beta is 1.25. If the firm's tax rate is 40%, what will be the beta of an all-equity firm if its operations were exactly the same? 0.89 Now consider the case of another company: U.S. Robotics Inc. has a current capital structure of 30% debt and 70% equity. Its current before-tax cost of debt is 896, and its tax rate is 40%. It currently has a levered beta of 1.25. The risk-free rate is 3.5%, and the risk premium on the market is 896. U.S. Robotics Inc. is considering changing its capital structure to 60% debt and 40% equity. Increasing the firm's level of debt will cause its before-tax cost of debt to increase to 10%. Use the Hamada equation to un lever and relever the beta for the new level of debt. what will the firm's weighted average cost of capital (WACC) be if it makes this change in its capital structure? 8.8% 10.5% 11.0% Which of the following statements r firm's optimal capital structure are true? Check all that apply. 12. 140 The optimal capital structure minimizes the firm's WACC. The optimal capital structure maximizes the firm's EPS. The optimal capital structure minimizes the firm's cost of equity. The optimal capital structure minimizes the firm's cost of debt