Select the interval where f(x)>0

Given:

The graph of f(x).

To find:

The interval where f(x)>0.

Solution:

From the given graph it is clear that the graph of f(x) lies above the axis for the intervals (-4,-1) and (1,∞), so f(x)>0 for and .

The graph of f(x) lies below the axis for the intervals (-∞,-4) and (-1,1), so f(x)<0 for and .

Form the given options, interval is the only interval for which the function lies above the x-axis.

Therefore, the correct option is A.

there is no grid

step-by-step explanation:

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.