For the function f(x) = -2x* + 24x + 10, find all intervals where the function is increasing: f is increasing on (Give your answer as an interval or a list of intervals, e.g., (-infinity,8] or (1,5),(7,10) .) Similarly, find all intervals where the function is decreasing: f is decreasing on (Give your answer as an interval or a list of intervals, e.g., (-infinity,8] or (1,5), (7,10) .) Finally, find all critical points in the graph of f(x) critical points: I = (Enter your I-values as a comma-separated list, or none if there are no critical points.)