Question

The temperature was 38 degrees Fahrenheit before a cold front came through. Ten hours later, the temperature was -12 degrees Fahrenheit. If the temperature dropped at a constant rate, find the rate of change, in degrees per hour.

Answer 1

-5 degrees per hour

Explanation:

In 10 hours, the temperature dropped -50 degrees (38 + 12, and make it negative because the temperature went down, not up).

So divide -50 by 10

-50/10 = -5