The profit, P dollars, earned by a company producing CDs is approximated to be P = -30x²+720 1720, where dollars is the selling price of one CD. What selling price gives the maximum profit? $15 $11 $12 $13 A farmer wants to put a fence around a vegetable garden. Only three sides must be fenced, since a rock wall will form the fourth side. If he uses 40m of fencing, what is the maximum area of the enclosed vegetable garden? 400m² 200m² 800m² 100m²

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