5x + 400 A garden shop determines the demand function q = D(x)%= during early summer for tomato plants where q is the number of plants sold per day when the 10x + 11 price is x dollars per plant (a) Find the elasticity (b) Find the elasticity when x= 4. (c) At $4 per plant, will a small increase in price cause the total revenue to increase or decrease?

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Q: 23 and 31

A: on doing diffrentiation we will get

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