provide detailed solutions to the above pictured questions

Suppose the following information about a stock is known: It trades on the NYSE and its operations are based in the United States. Current yield on a U.S. 10-year treasury is 2.5%. The average excess historical annual return for U.S. stocks is 7.5%. The beta of the stock is 1.25 (meaning its average return is 1.25x as volatile as the S&P500 over the last 2 years). What is the expected return of the security using the CAPM formula