Water cools from 68 cto 23 c in 30 min. what is the rate of temperature change?

-1,5º per minute.

Explanation:

To solve this we just need to divide the number of grades that the temperature cooled off between the amount of minutes in which that change was experienced:

Change in temperature= Final temperature-initial temperature

Ct=23-68=-45

we divide the -45º by the 30 minutes:

-45/30=-1,5

So we know that the water changed its temperature at -1,5 grades per minute.

your answer would be fusion

im guessing the west of station b