At 2pm the temperature is 22 degrees, by 4am it is negative 7 degrees. We think the answer in the change of temperature is 22 degrees am I right?

3 answers

No.

When the temperature got to 0, the change was 22 degrees. Now, subtract 7 degrees from 0 to find the total change in temperature.
Ok, I came up with 29
Yes. It dropped 29 degrees.