Suppose that f is given for x in the interval [0,12] by

0 | 2 | 4 | 6 | 8 | 10 | 12 | |

-18 | -22 | -25 | -26 | -25 | -23 | -19 |

**A.**
Estimate

**B.**
For what values of

*(Give your answer as an interval or a list of intervals,
e.g.,* **(-infinity,8]** *or*
**(1,5),(7,10)** *.)*

**C.**
For what values of

*(Give your answer as an interval or a list of intervals,
e.g.,* **(-infinity,8]** *or*
**(1,5),(7,10)** *.)*

You can earn partial credit on this problem.