help me understand steps 1-5 on this homework problem

Manipulating CAPM Use the basic equation for the capital asset pricing model (CAPM) to work each of the following problems. a. Find the required return for an asset with a beta of 0.77 when the risk-free rate and market return are 10% and 12%, respectively. b. Find the risk-free rate for a firm with a required retum of 7.742% and a beta of 0.89 when the market return is 8%. c. Find the market retum for an asset with a required return of 6.548% and a beta of 0.21 when the risk-free rate is 6%. d. Find the beta for an asset with a required return of 16.500% when the risk-free rate and market return are 10% and 15.2%, respectively. a. The required return for an asset with a beta of 0.77 when the risk-free rate and market return are 10% and 12%, respectively, is \%. (Round to two decimal places.) Beta coefficients and the capital asset pricing model Personal Finance Problem Katherine Wilson is wondering how much risk she must undertake to generate an acceptable return on her porfolio. The risk-free retum currently is 2%. The return on the overall stock market is 10%. Use the CAPM to calculate how high the beta coefficient of Katherine's portfolio would have to be to achieve a portfolio return of 15%. The beta of the portfolio is (Round to four decimal places.)