can someone show how to set up this excel spreed sheet and have answers? Thank you so much!

You have observed the following returns over time: Assume that the risk-free rate is 6% and the market risk premium is 5%. What are the betas of Stocks X and Y ? What are the required rates of return on Stocks X and Y ? What is the required rate of return on a portfolio consisting of 80% of Stock X and 20% of Stock Y