Please answer the questions regarding the following chart (10 Points)
Output Fixed Cost Variable Cost Total Revenue
3 $100 $200 $400
4 $100 $300 $500
a) Find the total cost of 3 units.
b) Find the average cost of 4 units.
c) Find the marginal cost of 4 units.
d) Find the marginal revenue of 4 units.
e) What is the equilibrium output and why.