E8-6 a. Calculate the required rate of return for an asset that has a beta of 1.8, given a risk-free rate of 5% and a market return of 10%. b. If investors have become more risk-averse due to recent geopolitical events and the market return rises to 13%, what is the required rate of return for the same asset? c. Use your findings in part a to graph the initial security market line (SML), and then use your findings in part b to graph (on the same set of axes) the shift in the SML