Calculating Numerical value of the Equilibrium Risk Premium

"Given the following information, Rf = 0.06, E(RM) = 0.12, M = 0.15, answer the following (a) What is the numerical value of the equilibrium risk premium (that is, the excess return on the market portfolio)? (b) What is the equilibrium expected return on a risky asset with beta of 1.2? with beta of 0.6? (c) Suppose a stock has a beta of 1.2. could this stock have a return of .10 in a given year? (d) What is the beta of a security with an equilibrium expected return of 0.03? "