A company's profit, , in thousands of dollars, can be modeled by a linear function of the number of items sold, . If the company sells 50 items, its profit is thousand dollars. If it sells 150 items, its profit is thousand dollars. What does the -intercept of this linear function represent in this context?
The profit per item sold.
The number of items sold when the profit is zero.
The initial investment or cost when no items are sold.
The maximum profit the company can achieve.
