Answer :
The function f(x) is greater than zero when the value of x lies in between -3 and 5 and this can be determined by using the given graph.
What is graph?
Graph is a mathematical representation of a Networks and it's describes the relation between lines and points.
The graph of the function f(x) is given.
The following steps can be used in order to determine the interval for f(x):
Step 1 - The value of f(x) means the value of y.
Step 2 - The value of f(x) is positive when the graph of f(x) is in the first or in the second quadrant.
Step 3 - So, according to the graph function f(x) is positive when the value of x is in between -3 and 5.
Therefore, the correct option is 3).
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