Answer:
A.

B. Negative change of 18 degrees
C. Negative change of 23 degrees, final temperature would be -8°F
Explanation:
A.
The expression that represents the change in temperature is:

B.
If the final temperature is -3°F and the inicial temperature is 15°F, the change in temperature is:

We have an absolute change of 18 degrees.
C.
If the change is 5 degrees more, the change would be 18 + 5 = 23 degrees, and the final temperature would be 5 degrees lower, that is:
