Table:
n: 1, 2, 3, 4, 5, 6
f(n): 4, 6, 8, 10, 12, 15
Domain: 1, 2, 3, 4, 5, 6
Range: 4, 6, 8, 10, 12, 15
The domain is the input of the function or n in this case. So, in the boxes, you would put [1, 2, 3, 4, 5, 6, ...]
The range is the output of the function or f(n) in this case. So, in the boxes, you would put [4, 6, 8, 10, 12, 14, ...]