Agolf instructor ordered 21 cartons of golf balls. each carton contained 15 golf balls. and equal number of golf balls were given to each of his six classes and the rest were put in his golf bag. how many golf balls to the instructor put in his golf bag?

What can we do about it

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.