Tickets to a baseball game cost $3 for a child's ticket and $5 for an adult ticket. At the last game, $521 was
collected when 139 people attended the game. Which
value could replace x in the table so that a single-
variable equation can be written and solved to
determine the number of child's tickets, c, sold?
* 139
521
013-c
521 - c

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.