Show calculation and formulas used for all your work

a) What is the highest discount rate at which the project would still be acceptable (i.e. A zero NPV)?

b) ABC's stock price increased from $8.92 to 14.65 in three years. Over the same period, the index grew at a compound rate of 9.82%. Did the company perform well, all else being equal? Y or N?

c) A company has $749 million dollars in common equity. For the risk the company represents, shareholders expect, a return of 12% on this investment. Over the past year, the company earned a net income of $102 million. It paid preferred shareholders a preferred dividend of $14 million. How satisfied would the common shareholders be with the profit? Please show your work.