Select the functions whose average rate of change over the interval -1 to 2 is 2.

Question

Select all that apply:

A. 1+4x/2

B.x^2-x

C.x^2

D.x^2+x

I think its B and D but idk

Answer 1

since the interval length is 3, you need f(x) to increase by 6
now what do you think?