The organized crime boss and perfume king Butch (Stinky) Rose has daily overheads (bribes to corrupt officials, motel photographers, wages for hit men, explosives, and so on) amounting to $5,000 per day. On the other hand, he has a substantial income from his counterfeit perfume racket: He buys imitation French perfume (Chanel No. 22.5) at $40 per gram, pays an additional $50 per 100 grams for transportation, and sells it via his street thugs for $800 per gram. Specify Stinky's profit function, P(x), where x is the quantity (in grams) of perfume he buys and sells.
P(x) = 800x - (5000 + 40x + 50x) because you're subtracting his costs (in the parentheses), from what he sells (800 per gram), which will tell you how much profit he is making.
At least that is what I am understanding from this question.
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