A strong positive
The plot has a positive slope and very close together pattern, so I would say a strong positive
The answer is -31 over 12.
Unless I am misreading, the question, or don't know all of it, there can be an infinite number of similar shapes. Three are give to you at the bottom of this answer, but there are many more possibilities.
If a light bulb consumes 600 per day, then you need to divide 2250 by 600. So it would be around 3.75 days
I need to see the directions