# 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.

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