## anonymous 4 years ago Which of the following is true? A) When solving a polynomial inequality, always determine a test value before finding any boundary points. B) When solving a polynomial inequality, use a test value to determine if the polynomial is equal to zero. C) When solving a polynomial inequality, choose a test value from an interval to test whether the inequality is positive or negative on that interval. D) When solving a polynomial inequality, a test value can be the same as a boundary point.

1. anonymous

C. use a test value after you determine the intervals

2. anonymous

If you don't determine the intervals first, then you'll be looking at any number from $(-\infty,\infty)$ !!! So the answer must be C.