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 0.90 when the​ risk-free rate and market return are 8​% and 12%​,= respectively.

b.  Find the ​risk-free rate for a firm with a required return of 15.000​% and a beta of 1.25 when the market return is 14%.

c.  Find the market return for an asset with a required return of 15.996​% and a beta of 1.10 when the​ risk-free rate is 9%.

d.  Find the beta for an asset with a required return of 15.000​% when the​ risk-free rate and market return are 10​% and 12.5%​, respectively.