ocr: Sales Revenue We have already plotted our total cost curve. If we then plot a total revenue curve we will be able to discover the level of activity at which total costs are exactly equal to total revenue. In our example the total sales revenue curve can be plotted as tollows: 40000 35000 30000 25000 20000 15000 10000 5000 - - D 100 200 300 400 Level of Sales (units)