algebra 2 problem

Question

Find the average rate of change of f(x) = x^2 +2
a. = from 3 to 5
b. = from-1 to 1
c. = from 3 to 6

Answer 1

a------

 

f(x)=x^2+2

 

average rate of change = [f(b)-f(a)]/(b-a)

 

                                 = (27-11)/(5-3)

 

                                  =16/2

                                  =8

 

Likewise try yourself parts b & c