Answer :
9:00 am to 1:00 pm is 4 hours.
The temperature dropped 2 degrees every hour so 2 x 4 = 8 total degrees.
Add 8 degrees to the final temperature to find the starting temperature.
-13 + 8 = -5 degrees at 9:00 am.
9:00 am to 1:00 pm is 4 hours.
The temperature dropped 2 degrees every hour so 2 x 4 = 8 total degrees.
Add 8 degrees to the final temperature to find the starting temperature.
-13 + 8 = -5 degrees at 9:00 am.