Answer:
The average rate of change is 3
Explanation:
To find the average rate of change you need to find the slope of the starting point and the end point.
For n = 1 to n = 5, the end point is (5, 14) and the starting point is (1, 2).
The slope formula is:

Just find the slope of the starting point and the end point to find the average rate of change.

The average rate of change is 3