if a firm's beta is 3, and the market return is 10%, what is the required return on the firm's stock if the risk-free rate is 5%? And if this company paid annual dividend of $8/share at the latest year-end, and the dividend is expected to grow at 7% for the foreseeable future, what is the rational price of this firm's stock? if the stock currently trades at $80, is this a "must buy" or "must sell"? Why please explain why must buy or must sell thank you! Really need second portion explained in detail as well as the "why"