Question

Which intervals show f(x) increasing? Check all that apply.

Answer 1

The answer is just C and D if your using edgen

Answer 2

Answer:

The correct options are 3 and 4.

Explanation:

From the given graph it is clear that the turning points of the graph are (-1.6,-56), (0.8,11.4) and (2,0).

Using these points we can say that,

1. The given function increasing on $(-1.6,0.8),(2,\infty)$.

2.The function is decreasing on $(-\infty,-1.6),(0.8,2)$.

In interval [–2.5, –1.6), the function is decreasing.

In interval [–2, –1], first the function is decreases, after that the function increases.

In interval (–1.6, 0], the function is decreasing.

In interval [0, 0.8), the function is decreasing.

In interval (0.8, 2), the function is decreasing.

Therefore, the correct options are 3 and 4.