Question

If f(x) = x2 + 2x + 3, what is the average rate of change of f(x) over the interval [-4, 6]?

a) 51
b) 40
c) 31
d) 20
e) 4

please help !

Answer 1

find f(-4) and f(6) then the its

\[Avg ~rate = \frac{f(-4) - f(6)}{-4 - 6}\]

hope it helps