SOLUTION: A function is given. Determine the average rate of change of the function between the given values of the variable. f(x) = 5x^2; x = 4, x = 4 + h I got 80+5h as my answer, whic

Algebra ->  Functions -> SOLUTION: A function is given. Determine the average rate of change of the function between the given values of the variable. f(x) = 5x^2; x = 4, x = 4 + h I got 80+5h as my answer, whic      Log On


   

Question 928021: A function is given. Determine the average rate of change of the function between the given values of the variable. f(x) = 5x^2; x = 4, x = 4 + h
I got 80+5h as my answer, which I am being told is wrong.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

f%28x%29+=+5x%5E2
average rate of change =%28f%28x%5B2%5D%29-f%28x%5B1%5D%29%29%2F%28x%5B2%5D-x%5B1%5D%29
x%5B1%5D+=+4, x%5B2%5D+=+4+%2B+h
f%28x%5B1%5D%29+=+f%284%29+=+5%2A4%5E2+=+5%2A16=80


average rate of change =%285h%5E2%2B40h%2B80-80%29%2F%284%2Bh-4%29

average rate of change =%285h%5E2%2B40h%29%2F%284%2Bh-4%29
average rate of change =cross%28h%29%285h%2B40%29%2Fcross%28h%29
average rate of change =5h%2B40