We will use the amount Jermaine used to determine the admission price, since that is not given to us. The total amount he paid is equal to the sum of the price of the tickets and the admission price, a. We get the equation 48.75 = 1.50 * 20 + a (a = $18.75). Now, if a person comes to the fair and pays for only the rides and admission, we can form an equation in x, the number of ride tickets, and y, the total cost incurred by that person. y = 1.50x + 18.75. Here, y is the total cost, 1.50 is the price per ticket, x is the number of tickets and 18.75 is the admission cost.
