Answer:
B. -21a-15
Step-by-step Explanation:

It would be on a positive incline and pass through the points (0,-5), (1, -2), and (4,3)
Answer:
49/4
Step-by-step explanation:
x² -7x +(7/2)²=(x-7/2)²
x²-2x·7/2+ (7/2)²=(x²-7/2)²
(7/2)²=49/4
This type of question is very rare on Brainly. It's always a special
occasion when one comes along. I call this a "twofer".
Wherever this question was copied from, it clearly had both a
quadratic equation and a list of (4) methods along with it. Sadly,
the individual who expects to be handed a fully-developed set of
answers on a silver platter chose to share neither of them with the
volunteers whose assistance he so earnestly solicits.
One might just as well come along and post:
<em>"Answer the following question, using the following words." </em>
and then leave it at that, for others to puzzle over.