Answer:
Follows are the solution to this question:
Explanation:
The general term for temperature variations from 8 am to 10 am:
Where
represents a transition throughout the time interval subscribed to.
In this, the city of A:
In this, the city of B:

It decrease of 3° (non-value) overall in city A.
Temporarily, in city B, is 8° C. City B has a greater temperature change (8 vs. 3) between A and B.