Short description:A graph plots quantity against price or cost per unit in dollars.Long description:The horizontal axis representing quantity ranges from 0 to 180, in increments of 20. The vertical axis representing the price per cost per unit (dollars) ranges from 0 to 30, in increments of 5. The graph plots two lines and two curves. The curve, ATC passes through the following points: (40, 25), (60, 20), (100, 15), (150, 15), and (180, 20). The curve, MC passes through the following points: (60, 6), (100, 10), (140, 18), and (160, 25). The line, D equals AR passes through the following points: (0, 30), (50, 25), (100, 20), (150, 15), and (180, 12). The line, MR passes through the following points: (0,30), (40, 22), (75, 15), (100, 10), and (140, 2). The two curves intersect at (120, 14). The curve, ATC intersects the line, D at points (35, 27) and (150, 15). The curve, MC intersects the line, D and line, MR at points at (130, 17) and (100, 10). Note: all values are approximate. Refer to the graph above which is for a firm in a Monopolistically Competitive industry. At the profit-maximizing level of output, Total Revenue of the firmWhat