Answer:
11
Step-by-step explanation:
(-3)²-3(-3)-7
9+9-7
11
The answer is 13/18 because it is congruent to 0.7(2).
17. The answer should be 17
If

then the derivative is

Critical points occur where
. This happens for



In the first case, we find

In the second,

So all the critical points occur at multiples of
, or
. (This includes all the even multiples of
.)