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If the marginal cost function MC = 7 – 4x then the cost function is _______ (a) 7x – 2x^2 + k (b) 7 – 4x^2

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If the marginal cost function MC = 7 – 4x then the cost function is _______ 

(a) 7x – 2x2 + k 

(b) 7 – 4x2 

(c) 7/x – 4 

(d) 7x – 4x2

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1 Answer

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Best answer

(a) 7x – 2x2 + k 

C = ∫MC dx 

= ∫(7 – 4x) dx 

= 7x – 2x2 + k

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