Return Subn You have estimated that your firm's total cost function for a particular product is TC = 5q^2-15q+677, where TC is total cost and q is units of output. What is the firm's marginal cost for this product when producing 82 units? Type your answer.. 8 10 points Suppose that a firm has estimated its inverse demand curve as P = 1,385 - 0.08*q, where P is the price per unit and q is the quantity of units produced. What is the firm's marginal revenue equal to when it produces 2,078 units? Please round to two decimal places.' Type your