Finding Increasing or Decreasing Intervals

If a function f is increasing on the intervals [-5,5] and [13,21] and decreasing on the interval [5,13], determine the interval(s) on which g(x)=-3f(2x-5) is increasing.The graph g(x)=-3f(2x-5) is increasing on the interval ( , ).(Type your answer in interval notation.)

Find the intervals in which the following functions are strictly increasing or decreasing: (x 1)3 (x − 3)3 - Mathematics | Shaalaa.com

1.2.3: Increasing and Decreasing Functions