Answer:
Never
Step-by-step explanation:
Using the formula to find the sum of the interior angles, (n-2) * 180, we can work backwards.
300/180 +2 = 11/3 or 3.666. Polygons cannot have decimal sides therefore your answer is never.
The first one is C and the second one is B
You can write it in expanded form as 100+40+9+.06
or in word form as one hundred fourth nine point zero six