Employees at the shoe shack get a 25% discount when they buy a pair of shoes at the store. theo wants to buy a pair of shoes with a regular price of $48.

48 x 0.25 = 12 (which is how much you get off the og price)
48-12 = $36

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.