Respuesta :

Your domain is your x or x value. Therefore your domain should be 19; 20; 21; 22 and your y or y value is your range. Hope this helps 
Solutions 

The domain are all the x-values, the range are all the y-values.

R={(19,96),(20,101),(21,106),(22,111)}

The domain will be :- 19, 20, 21, and 22