if two distinct lines intersect, which must be true?
a) the lines are parallel
b) the lines are perpendicular
c) the lines form angles at the intersection
d) the lines form right angles at the intersection

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.

For the first question the answer is a, for the second c, for the third d, for the 4th b, for the 5th a