The graph above plots a function of f(x).

it represents time, the average rate of change of the function f(x) in the first two seconds is ?

will vote

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.