Please help I will give you a lot of points and the brainiest. You don't have to show your work if you don't want to, just the answer.

--Just so you know this isn't the regular kind of subtraction we use everyday. (This uses Hindu-Arabic number system)

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.