$\"\"$

Rate of change = $\"\"$ .

The number of inches changes from 0 to 36 and the feet changes from 0 to 3.

Rate of change = $\"\"$

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

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

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