how do i solve in excel?

Data for Stocks X and Y and the overall market are shown below. Assume that the risk-free rate is 5%. 1. Estimate the historical average returns and standard deviations for Stocks X and Y and the market. 2. Estimate the betas of Stocks X and Y and the market. 3. Estimate the required returns on Stocks X and Y and the market. 4. Assume you form a portfolio by investing 30% in Stock X,40% in Stock Y, and 30% in the market. What is the portfolio's beta? 5. Estimate the required return of the portfolio