Wait... yes they do. If I raise the price of my product, less people will buy it but I'll make more profit per-unit -- so the amount of money I make is an inve

Wait... yes they do. If I raise the price of my product, less people will buy it but I'll make more profit per-unit -- so the amount of money I make is an inverted U with price on the x axis and money on the y axis, and I should set the price at the inflection point.