Imagine you are going to a Broadway show of Hamilton. Each ticket is $20 and each drink is $1.50. You plan on buying a ticket for 3 people. The total ticket price would be $60. then you would need each person to have a drink. 3 drinks would be $4.50. making the equation y=20x+4.50. making x the amount of tickets bought if you bought 3 drinks along with it.

Therefore, if you bought 3 drinks along with the 3 tickets, the total cost would be $64.50. The equation y=20x+4.50 can be used to calculate the total cost for buying x tickets and x drinks.