A company that produces tracking devices for computer disk drives finds that if it produces x devices per week, its costs will be C(x) = 180x + 16,000 and its revenue will be R(x) = -2x2 + 600x (both in dollars). (a) Find the company's break-even points. (Enter your answers as a comma-separated list. ) devices per week (b) Find the number of devices that will maximize profit. devices per week Find the maximum profit. $