$\"\"$

Rate of change = $\"\"$ .

The temperature changes from $\"\"$ to $\"\"$ and the altitude changes from 2000m to 0m.

Rate of change = $\"\"$

Rate of change = $\"\"$ . (Divide: $\"\"$ )

So, the rate of change is $\"\"$ , or a decrease of $\"\"$ . $\"\"$

The rate of change is $\"\"$ .