There are 25 students in a class, 40 percent of whom are girls. If the average
(arithmetic mean) weight of the girls is 120 pounds and the average weight of
the boys is 150 pounds, what is the average weight in pounds of the students in
the class? *

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.