The cost function for KLM Company is given by C(Q) = 100 + 10Q + Q², where costs are measured in thousands of dollars, and output is measured in thousands of hours rented.

1. What is the average fixed cost of producing 4 units of output
2. What is the average variable cost of producing 4 units of output
3. What is the average total cost of producing 4 units of output
4. What is the marginal cost of producing 4 units of output
5. What is the relationship between the answers to a, b, and c above