Which estimate best describes the area under the curve in square units? 10 units² 15 units² 25 units² 30 units²

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Can someone me with the property questions for 12 13 and 14 plz

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.