Question

f(x)=x^2−x−1

Over which interval does fff have an average rate of change of zero?

Choose 1 answer:

(Choice A)

2≤x≤3

(Choice B)

−3≤x≤−2

(Choice C)

−1≤x≤2

(Choice D)

−5≤x≤5

Answer 1

Answer:

Choice C

Step-by-step explanation:

Plug the equation into a graphic calculator.

Answer 2

Answer:

Choice C: −1≤x≤2

Step-by-step explanation: