Question

Find the average rate of change for f(x) = x2 + 9x + 18 from x = -10 to x = 10.

Answer 1

With the way the equation is written, we can assume that the “x2” is x multiplied by 2.

The x2 and 9x are like terms, and can be simplified to 11x.

Our new equation is
f(x) = 11x + 18

With no exponential functions in the equation, the difference of each value’s output would be 11.