1. The equation that will help them predict the amount of money they collect if they charge $5 per person is: A = 5n, where A is the amount of money collected and n is the number of people buying tickets. 2. The equation that will help them predict the profit if they charge $5 per person is: P = 5n - C, where P is the profit, n is the number of people buying tickets, and C is the rental cost.