
In order to be differentiable everywhere,
must first be continuous everywhere, which means the limits from either side as
must be the same and equal to
. By definition,
, and


so we need to have
.
For
to be differentiable at
, the derivative needs to be continuous at
, i.e.

We then need to have

Then

4 gallons
If half covers an eighth, then you need half a total if 8 times. So multiply half by 8 and you get 4.
If this helped please mark branliest
Its A, and both by a factor 1/15
Answer:
763/100 is the answer to this
Triangle, rectangles, pollygon, robtuse, i hope this is what you mean