Question

The temperature at 9:00 AM was 42°F. The temperature dropped 9 degrees per hour for the next seven hours. What is the temperature at 4:00 PM?

Answer 1

Hey there! I'm happy to help!

Let's call our hours h. Here is what we have going on.

42-9h

4:00 PM is 7 hours after 9:00 AM. So, we will replace the h with 7 and evaluate.

42-9(7)

42-63=-21

Therefore, the temperature would be -21°F.

Have a wonderful day! :D