B, the first differences are not the same , that proves it is not linear. The second set of differences are the same this shows it is a quadratic function.

252,333.258656 inches 2
I think something is wrong here
I think the answer is 160, I'm not completely sure. Anyway, have a good day!
Answer:
7.23km/h
Step-by-step explanation:
Speed = distance/time
Given
distance = 6.36km and
Time = 53minutes
Convert 53minutes to hour.
60 minutes = 1 hour
53 minutes = x hour
Cross multiply
X hour x 60 = 53
Xhour = 53/60
X = 0.88 hour
Therefore
Speed = 6.36km /0.88hr
= 7.23km/h