5. The short-run cost function of a company is given by the equation TC = 400 + 35q, where TC is the total cost and q is the total quantity of output, both measured in millions. a) What is the company's fixed cost? b) If the company produced 50,000 units of goods, what would be its average variable cost? c) What would be its marginal cost of production? d) What would be its average fixed cost?