A marketing department estimates that demand for a product is given by P=100-0.0001x, where P is price per unit and X is number of units. The cost C of producing x units is given by C=350,000+25x And the profit P for producing x units is given by P= R-C=xp=C. Sketch the graph of the profit function. Use a graphing utility to estimate the number of units that would produce a maximum profit ( to nearest thousand). So I got as far as p=x(100-0.0001x)-350,000+25x. When I graph that, it doesn't match what the options of graphs on my homework are.