The average rate of change for this function for the interval from x= 1
to x = 3 is 12.
What is Rate?
This is defined as the ratio between two related quantities in different units.
Average rate of change = f(b) - f(a) / (b - a)
We were given a = 1, f(a) = 3 ,b = 3, f(b) = 27
= 27 - 3 / 3 - 1
= 24 / 2 = 12.
The average rate of change for the interval from x = 1 to x = 3 is therefore 12 thereby making option C the most appropriate choice.
Read more about Rate of change here https://brainly.com/question/25184007