A perfectly competitive firm has the total cost curve is given by: TC = 270+13q+0.4q2 . If the market price is $65. What is the firm supply curve (supply equation) Select one: (a) p=13+ 0.8q : p<13 (b) p=13+ 0.4q : p>13 (c) p=13+0.8q : p>13 (d) p= 270 + 13q : P>13

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