Question

What is the average rate of change of the function f(x)=2x^2+x+5 over the interval -2

Answer 1

we get that:

$\begin{gathered} f(2)=8+2+5=15 \\ f(-2)=8-2+5=11 \end{gathered}$

so the average change is:

$m=\frac{15-11}{2--2}=\frac{4}{4}=1$

so the answer is the option C