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Suppose that the total cost function, in dollars, for the production of x units of a product is C(x) 25,000 +45x +0.4x2 Cx) total cost 25,000 +45+ 0.4x e) Find the instantaneous rate of change of average cost with respect to the number of units produced, at any level of production. Then the average cost of pr odu (b) Find the level of production at which this rate of change equals zero. 2 (c) At the value found in part (b), find the instantaneous rate of change of cost and find the average cost. instantaneous rate of change of cost$ What do you notice? O The instantaneous rate of change of cost is less than the average cost. O The instantaneous rate of change of cost equals the average cost. O The instantaneous rate of change of cost is greater than the average cost