23.Assume the market follows a single index model, the index has an expected return of 15% and risk-free rate is 5%. For a stock with risk premium of 12% and abnormal return of 4%, what is the beta of this stock?

24.Suppose the market follows a Fama-French Three-factor model (FF3), where the market has expected return of 6%, E(r_hml) is 2%, and E(r_smb) is 3%. Suppose a stock has market beta of 1.5, HML beta of 2, and SMB beta of 2.5. Given the risk-free rate is 3%, what is the expected return of this stock?