Can someone check if this is correct? Again Im sorry but not Prasad

The total market value of Okefenokee Real Estate Company's equity is $12 million, and the total value of its debt is $8 million. The treasurer estimates that the beta of the stock currently is 15 and that the expected risk premium on the market is 6%. The Treasury bill rate is 3% a. What is the required rate of return on Okefenokee stock? Required rate of return 12% b. What is the beta of the company's existing portfolio of assets? The debt is perceived to be virtually risk-free. (Round your answer to 2 decimal places.) Weighted-average beta 1.5 C. Estimate the weighted-average cost of capital assuming a tax rate of 40% (Do not round intermediate calculations. Round your answer to 2 decimal places.) WACC 792% d. Estimate the discount rate for an expansion of the company's present business. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Discount rate 792 % e. Suppose the company wants to diversify into the manufacture of rose-colored glasses. The beta of optical manufacturers with no debt outstanding is 1.5. What is the required rate of return on Okefenokee's new venture? (You should assume that the risky project will not enable the firm to issue any additional debt.) Required rate of return