Let total revenue received from the sale of $x$ units of a product is given by $R (x) = 12 x + 2 x^{2} + 6.$
Then the marginal revenue is

[2 marks]

12 x + 2 x^{2}

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12 + 2 x

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12 + 4 x

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4 x + \frac{6}{x}

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Solution

The correct option is C $12 + 4 x$
Given : $R (x) = 12 x + 2 x^{2} + 6$
Marginal revenue, $M R = \frac{d}{d x} (R (x))$
$\Rightarrow M R = \frac{d}{d x} (12 x + 2 x^{2} + 6)$
$∴ M R = 12 + 4 x$

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