Posted by Olivia on .
find the average rate of change from 1 to x
Find the average rate of change from 1 to 3
Using f(x) = 2x^2+6x

Math 
Henry,
F(x) = 2x^2 + 6x.
F(1) = 2*1^2 + 6*1 = 2 + 6 = 4.
F(3) = 2*3^2 + 6*3 = 18 + 18 = 0.
F(3)F(1) = 0  4 = 4 = Average rate of change.