Answer:


And replacing the data into the average rate formula we got:

And then the best answer for this case would be:
C. 27.5
Explanation:
For this cae we know that the average rate of change of a function is given by this general expresion:

For this special case from the info of the table we have:


And replacing the data into the average rate formula we got:

And then the best answer for this case would be:
C. 27.5