a. Your investment portfolio contains 200 shares of Dollarama and 450 shares of Dollar Tree. The price of Dollarma is currently $92 per share, and the price of Dollar Tree is currently $11 per share. If you expect the return on Dollarama to be 6% in the next year, and the return on Dollar Tree to be 8%, what is the expected return for your portfolio?

b. Henry's stock has a beta of 0.9, while Sandyshore stock has a beta of 1.35. If the risk-free rate is 2%, and the market risk premium is 8%, what is the expected return on a portfolio with equal holdings of Henry's and Sandyshore?