Pls help I’m just asking pls it’s not hard please I promise all I need is help nobody helps me so this is why I’d downloaded this app for help so please do it do pg.15.thank you

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.