I have these four set of questions, and I don't know how to answer them since I don't know the formulas and stuffs - Can you please explain them in a simple way, it doesn't have to be explained briefly, just need a short a simple answer for these questions

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Question 2: Lecture Question

How can we estimate a firm or project beta?

Question 3: Lecture Question

How does leverage affect beta?

Question 4: Lecture Question

How do we determine the weighted average cost of capital?

Question 5: Lecture Question

How do flotation costs affect the capital budgeting process?