Target sells 24 bottles of water for $3, and 36 bottles of water for $4. which is the better buy and by how much?

36 bottles for $4 is the better buy
The rate of the 24 bottles: $1 for 8 bottles
The rate of 36 bottles: $1 for 9 bottle

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.