Solve the problem.A product sells by word of mouth. The company that produces the product has noticed that revenue from sales is given by  where x is the number of units produced and sold. If the revenue keeps changing at a rate of  per month, how fast is the rate of sales changing when 800 units have been made and sold? (Round to the nearest dollar per month.)

A. $2263/month
B. $113,137/month
C. $4525/month
D. $6/month


Answer: C

Mathematics

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