Question

The temperature change from 7f at 6pm to -5f at midnight. What the difference between the high and low temperature? What was the average change in temperature per hour?

Answer 1

12 units. Average 2f/hour

Explanation:

From 7 to 0. 7 units

From 0 to -5. 5 units

Total 12 units

12units in 6 hours

Then

2 units in 1 hour

12/6=2. 6/6=1. 2/1=2.

Answer 2

12 F.

-2 degrees F/ hour.

Explanation:

The difference between high and low is 7 - (-5)

= 7 + 5

= 12 degrees F.

Average change per hour is (-5 - 7) / 6

= -2 / hour.