The cost and revenue functions of a product are given by C(x) = 2x + 400 and R(x) = 6x + 20 respectively. Where x is the number of items produced by the manufacturer. How many items the manufacturer must sell to realize some profit.

Profit = revenue - cost
But given profit > 0
therefore R(x) - C(x) >0
therefore 4x - 380 >0
therefore 4x > 380
therefore x>95

therefore manufacturer mut sell 96 items
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