Please show work & explain:

Note: We are not allowed to use Excel. I will be using a TI-83+.

(6-14) Historical Returns: Expected and Required Rates of Return You have observed the following returns over time: Year Stock X Stock Y 2012 14% 13% 2013 19 7 2014 -16 -5 2015 3 1 2016 20 11 Market 12% 10 -12 1 15 Assume that the risk-free rate is 6% and the market risk premium is 5%. a. What are the betas of Stocks X and Y? b. What are the required rates of return on Stocks X and Y? c. What is the required rate of return on a portfolio consisting of 80% of Stock X and 20% of Stock Y