Final answer:
The company must sell at least 50 items in order to realize some profit.
Step-by-step explanation:
In order to realize some profit, the revenue must exceed the cost. We can calculate the break-even point by setting the cost function equal to the revenue function and solving for x:
C(x) = R(x)
By substituting the given cost and revenue functions, we have:
20x + 4000 = 60x + 2000
Simplifying the equation, we get:
40x = 2000
Solving for x, we find that:
x = 50
Therefore, in order to realize some profit, the company must sell at least 50 items.