Use the function f(x) = 19x2 - 20x to answer the following questions. (a) Find the interval(s) on which f (x) is increasing. Number of increasing intervals: Choose one (b) Find the interval(s) on which /(x) is decreasing. Number of decreasing intervals: Choose one (c) Find the interval(s) on which f(x) is concave up. Number of concave up intervals: Choose one (d) Find the interval(s) on which f(x) is concave down. Number of concave down intervals: Choose one (e) Find the x-coordinate(s) of any/all inflection point(s). Number of inflection points: |Choose one