Question

How do you find the average rate of change of `f(x) = x^2 + x` from 3 to 6?

Answer 1

10

Explanation:

The formula for the average rate change of f(x), from x = a to x = b is

Average rate = `(f(b)-f(a))/(b-a)`, and here, it is

`(f(6)-f(3))/(6-3)=(42-12)/3=10`.