Use the table below of the function f(x) = x4 − 2x3 to answer this question:

x f(x)

−1 3
0 0
1 -1
2 0
3 27

what is the average rate of change from x = −1 to x = 2?
a. −3
b. −1
c. 1
d. 24

ANSWER

The average rate of change from to  is

EXPLANATION

The average rate of change from to

From the table,

and .

So we substitute in to the above expression for average rate of change.

The correct answer is B

r and t.

both are 64 degrees.