Question

George is trying to make some decisions about his business and has come up with P = (x - 100)(x + 20), where P represents his profit margin and x represents the number of DVDs he sold. What does (x - 100) mean?

Answer 1

In this case if x<100 George will be losing money.  So he will only earn a profit when he sells more than 100 DVDs.  Essentially (x-100) represents his break-even point.

Answer 2

C)

That in order to make zero profit he must sell 100 DVDs.

Explanation:

Since this is one of the factors then it will meet the zero product property. Since x stands for the number of DVDS he sells then the profit must be 0 when this factor = 0. Therefore, (x - 100) means That in order to make zero profit he must sell 100 DVDs.