The graph shows the profit of a candy factory, p(x), in thousands of dollars, as a function of x, the change in weight per package from 50 grams. For example, when x = -1, each package weighs 49 grams. Roughly estimate p'lX) when x = -1. What does it mean in this context? Remember to include units. Suppose the graph above is actually p'(x) vs x, and the graph is p(x) is unknown. How should the company optimize its profit? Why