HELP ME PLEASE!!!!

QUESTION 1 Please answer the following questions (each question is worth 2 points for a total of 12 points). 1. Why is preferred stock referred to as a hybrid security? Please explain. 2. Compare valuing preferred stock and common stock. 3. Explain the model that we use to calculate the value of a common stock. What assumptions do we need to make? 4. Why is capital budgeting such an important process? 5. What are the disadvantages of using the payback period as a capital-budgeting technique? What are its advantages? 6. Please describe each of the following three capital budgeting techniques: NPV, PI, and IRR