Question 3 (3 Marks) Discuss the following statement: "Generally the least expensive source of long-term capital is common stocks". Question 4 (3 Marks) What effect would an increased cost of capital have on a firm's future investments? Question 5 (10 Marks) wx=50% a- Calculate the risk and return for a portfolio consists of tow assest as follows: 11 1378=0.378=6891 545.49 b- Do you think X is more risky than Y based on the given informa