a firm has an equity beta of 1.25, the risk-free rate is 3.4 percent, the expected market return is 15.7 percent, and the pretax cost of debt is 9.4 percent. the debt-equity ratio is .47. if you apply the common beta assumptions, what is the firm's asset beta? a) .615 b) .675 c) .582 d) .735 e) .862