2. [-/4 Points] DETAILS MY NOTES ASK YOUR TEACHER For the function f(x)=x5-3x2-9x+4, determine the intervals where f is increasing and decreasing. (Write your answer in interval notation.) Increasing: Decreasing: Submit Answer1. [-/5 Points] ASK YOUR TEACHER Find the values a,b,c,d which make the quadratic function f(x)=ax3+bx2+cx+d have a local minimum value of 7 at X=D and a local maximum value of 15 at x=2. Submit Answer 3. [-/6 Points] DETAILS MY NOTES ASK YOUR TEACHER The graph of f' (the derivative) is pictured below. Determine each of the following. (If infinite, specify either co or -co . ) a. Interval on which f is decreasing, b. x-values of any critical points of f , lim f ( x ) - f( - 7 ) X - - 7 X+7 d. x -values of inflection points of f , Submit