This math problem (look at the screenshot) is for the smartest person in his/her class!

Answer:
[tex]-5<f(x)<5[/tex]
Step-by-step explanation:
The range of a function is the set of y values for which the function is defined.
In simpler words, the beginning of the range is the y value of the lowest point on the graph, and the ending of the range is the y value of the highest point on the graph.
For this problem, the graph reaches down to -5 and up to 5.