3. A stock has an expected return of 12.1% while the market's expected return is 9.8%. Given a risk-free rate of 3.8%, (a) calculate the stock's beta, and (b) briefly explain what this beta value means. (10 points) 4. At this time, the exchange rate between Euro and US$ is 1.06, and that between US$ and Mexican Peso is 19.68. Answer the following questions (15 points): (a) Rank the three currencies from most valuable to least valuable. Explain your ranking. (b) Calculate the cross-rate between Euro and Mexican Peso (you can use either currency as the base currency as long as you clearly show the base currency for your rate). (c) Explain clearly what happens in the foreign exchange market when the direct exchange rate between Euro and Peso is observed to be 20.705, given the cross-rate from part (b)