Calculating the Cost of Equity. Suppose stock in Boone Corporation has a beta of.90. The market risk premium is 7 percent, and the risk-free rate is 8 percent. Boone's last dividend was $1.80 per share, and the dividend is expected to grow at 7 percent indefinitely. The stock currently sells for $25. What is Boone's cost of equity capital? (See Problem 1.) Calculating the WACC. In addition to the information in the previous problem, suppose Boone has a target debt-equity ratio of 50 percent. Its cost of debt is 8 percent, before taxes. If the tax rate is 34 percent, what is the WACC? (See Problem 10.)