Question

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.

Answer 1

C. use a test value after you determine the intervals

Answer 2

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.