The domain of a function is the set of input values the function can take
The appropriate domain of the function is the set of whole numbers
From the question, the number of observed vehicles is represented by n.
The number of observed vehicles cannot be negative.
So, the minimum value of n is 0:
[tex]n = 0[/tex]
There is no limit to the number of vehicles they can observe.
Hence, the appropriate domain of the function is the set of whole numbers
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