The total market value of the common stock of the Okefenokee Real Estate Company is $11.5 million, and the total value of its debt is $7.5 million. The treasurer estimates that the beta of the stock is currently 1.8 and that the expected risk premium on the market is 7%. The Treasury bill rate is 3%. Assume for simplicity that Okefenokee debt is risk-free and the company does not pay tax. What is the required return on Okefenokee stock?  What is the discount rate for an expansion of the company's present business?