Given  that total cost of a firm is  C(q)=60q-12q^2  + q^3.   Derive an expression for average cost. 

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The total cost of a firm is given in terms of the output q as C(q) = 60q - 12q^2 + q^3.

The average cost for the producing q items is the total cost for an output of q divided by q. This is C(q)/q.

The average cost is (60q...

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The total cost of a firm is given in terms of the output q as C(q) = 60q - 12q^2 + q^3.

The average cost for the producing q items is the total cost for an output of q divided by q. This is C(q)/q.

The average cost is (60q - 12q^2 + q^3)/q

=> 60 - 12q + q^2

The average cost to the firm is given by the expression A = 60 - 12q + q^2

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