Suppose the total cost of producing q units of some commodity is given by the cost function C(q) = 0.004q^2 + 2q + 30, w

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Suppose the total cost of producing q units of some
commodity is given by the cost function C(q) = 0.004q^2 + 2q +
30, where q is the number of units produced, and
C(q) is the total cost, in dollars, to
produce q units.
Find a simplified expression for the rate of change of
the average cost as a function
of q