5.5 Suppose a company's demand and cost functions are given by the following equations: Demand Function: P = 1,200 - 0.005 Q Cost Function: TC = 35,000,000 + 300 Q Find the firm's break/even point. (Use the quadratic formula) Plot the break/even diagram (TR & TC on the y-axis, Q on the x-axis). What is the meaning of the break/even point? What is the DOL at a production rate of Q = 60,000 units? What is the impact on the firm's profit if unit sales rise by 10% from 60,000 units to 66,000 units? Is the DOL high or small