16.6 AmeriCam manufactures and sells motion picture cameras. The graph of the revenue and cost functions for the production and sale of 3 cameras are shown below. Both cost and revenue are in dollars. Revenue/Cost 18000 15000 12000 9000 6000 3000 Cameras Sold 1 10 20 30 40 50 60 70 80 90 100 (a) At what production/sales level does the maximum profit occur? Answer with units: (b) According to the graph, what is the maximum profit? Answer with units: (c) If the fixed cost increases, will the production level which maximizes profit be increased, decreased, or remain the same? increase decrease remain the same