Please help!
What is the average rate of change of f(x) over the interval [-3,9]?
(Answer in simplified fraction) Answer and explanation please
![Please help! What is the average rate of change of f(x) over the interval [-3,9]? (Answer in simplified fraction) Answer and explanation please class=](https://us-static.z-dn.net/files/d9a/9d694de1874fbabe1f3982cd34ea67ff.png)