1. Between two consecutive zeros, a polynomial must be entirely or entirely . 2. To solve...

Question:

1. Between two consecutive zeros, a polynomial must be entirely ________ or entirely ________.
2. To solve a polynomial inequality, find the ________ numbers of the inequality, and use these numbers to create ________ ________ for the inequality.
3. A rational expression can change sign at its ________ and its ________ ________.
4. The formula that relates cost, revenue, and profit is ________.