3)
The domain is all possible x values.
Domain= [-7, 7]
The range is all possible y values.
Range=[-6, 6]
Note: put parenthesis when that point is not included, and put brackets when the point is included
4)
Domain= (-4, 4) (parenthesis because the open circle means that the point is not on the graph)
Range= (0, 4) (parenthesis because the open circle means that the point is not on the graph)