(Solved): Using the first derivative number line below, determine the interval(s) the graph, f(x), is increasi ...

Using the first derivative number line below, determine the interval(s) the graph,

, is increasing and decreasing: (Note: Write your answers using interval notation and enter DNE is there are no intervals for the question.) a) The interval(s) over which the graph is decreasing: b) The interval(s) over which the graph is increasing: