Is this correct?

In the cost function below, C(x) is the cost of producing x items. Find the average cost per item when the required number of items is produced. C(x) = 7.5x + 9,100 a. 200 items b. 2000 items c. 5000 items a. What is the average cost per item when 200 items are produced? $10600 b. What is the average cost per item when 2000 items are produced? $ 24100 c. What is the average cost per item when 5000 items are produced? $ 46600