1. To determine the average rate of change of a function "f(x)" between the points "x = a" and "x = b" we use the following formula:
2. In this case, we have the following function:
And we have the points:
Now we determine the value of f(b) by replacing x = 4 in the function:
Now we determine f(0):
Replacing in the formula for the average rate of change we get:
Solving the operations:
Therefore, the average rate of change is 156.