The risk-free rate of return is 2.7 percent and the market risk premium is 6.9 percent. General Motors has a beta of 1.08, calculate its cost of equity. You may use the following Excel workbook for your calculations. Any work in Excel or on paper does not have to be submitted. Blank Workbook.xlsx 11.47 percent O 10.15 percent 12.22 percent O 10.92 percent