The graph of f'f ′
, the derivative of the function ff, is shown below. Determine all intervals on which f(x)f(x) is concave up on the open interval \left(-9, 9\right).(−9,9).

this is not a function

Step-by-step explanation: this has no linear coralation

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%