60 points to answer and will mark brainliest!! Plz help

A) approximate the intervals over which the acceleration is increasing. Write in interval or union of intervals.
B) approximate the decreasing in interval/union of intervals
C) how many turning points does the graph show?
D) Based on the number of turning points, what is the minimum degree of a polynomial function that could be used to model acceleration versus time? Would the leading coefficient be positive or negative?
E) Approximate the time when the acceleration was the greatest.
F) Approximate the value of the maximum acceleration