Question

a theater company charges $6.50 per ticket for people of all age groups. if c represents the total number of children who bought tickets and a represents the total number of adults who bought tickets, which expression best represents the total money earned by the company from the sale of tickets?

Answer 1

First, let us clarify the given.

C = total no. of children 
A = total no. of adults
T = total sales of the company

The best expression that would represent the total money earned by the company from the sale of tickets would be:

T = 6.50C + 6.50A

This is the best expression since the ticket costs the same for all age groups.