Answer :
[tex]\text{The temperature at 1 pm is -30}\degree F[/tex]
Here, we are told that the temperature drops at a certain rate
What this mean in this context is that it becomes colder as the hours roll by
The difference between 12 noon and 1 pm is just 1 hour
So the temperature after the drop in just one hour will be;
[tex]-27.5\degree F\text{ - }2.5\degree F\text{ = -30}\degree F[/tex]