PLEASE HELP WILL MARK BRAINLIEST!
Erik solved the average rate of change of f(x) over the interval from x = 6 to x = 10 this way : (10 - 6)/(18 - 8) = 4/10 = 2/5 * X His answer is not correct though. Please complete parts a & b to earn full credit.
a. Explain exactly what erik did wrong in his work
b. Show your work to solve the average rate of change correctly

He did the equation backward. He did , which is wrong.

The actual equation for average rate of change is:

Answers are below

Step-by-step explanation:

A) Erik did not use the correct points. When you use an x value, also use the f(x) value that goes with it. Erik chose random numbers to show the rate of change.

B) I chose two x values and the f(x) value that go with them. = is the rate of change.

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

i think that you should ask google for the answer to that problem because if we don't know it google does