Because this is a fifth degree polynomial, it's an odd function. Odd functions have one tail go up and the other down. Because the leading coefficient is a negative number, 3 to be exact, the left one goes up and the right goes down.
Answer:
Yes
Step-by-step explanation:
If you put all of those points on a graph you get a slope of 4 and a perfectly straight line.
Answer: -1° is the average for all 5 days