The temperature was -5 ℉ in Denver and then fell 8 ℉ by the morning.


The temperature was -15 ℉ im Minneapolis and then rose 9 ℉ in the morning.

At midnight the temperature is -6℃. At midday the temperature is 9℃. By how much did the temperature rise

The temperature is -2℃. If the temperature rises by 15℃, what is the new temperature?