Use the number line to you solve.
count on or count back. show your work.
there are 10 acorns on the ground.
then a squirrel puts 3 acorns in his mouth.
how many acorns are still on the ground?
0
1
2
3
4
5
6
7
8
9
10 11 12

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.