The function gives the cost to manufacture x items. C(X) - 30,000 + 10x + 50,000 X 100 Find the average cost per unit of manufacturing h more Items (ie, the average rate of change of the total cost) at a production level of x, where x is as indicated and h = 10 and 1. (Use smaller values of h to check your estimates.) HINT (See Example 1.1 (Round your answer to two decimal places.) 10 1 ave Estimate the instantaneous rate of change of the total cost at the given production level X, specifying the units of measurement C (100) -Select-