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A manufacture's cost function C(x) and r...

A manufacture's cost function C(x) and revenue function R(x) of x units of a product are respectively given by
`C(x)=3x+250`and`R(x)=8x+30`
Find the number of products the manufacture must sell to earn some profit.

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The correct Answer is:
Clearly, to earn some profit the manufacture must sell more than 44 units of the product.
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