A farmer wants to find the best time to take her hogs to market. The current price is 84 8 4 cents per pound and her hogs weigh an average of 80 8 0...

8080 pounds. The hogs gain 5 pounds per week and the market price for hogs is falling each week by 2 cents per pound. How many weeks should she wait before taking her hogs to market in order to receive as much money as possible?