4. Julie purchased tickets to a Mets baseball game from the Mets website. Each ticket costs $19 and the website charged a convenience fee of $5.75 per ticket. To celebrate going to the game, Julie also bought a new jersey from the website for $60.

a) Write an expression that represents the total amount of money she spent on the website based on the number of tickets she bought. First define your variable.

b) If her bill came to $159.00, how many tickets did she buy? Write and solve an equation, list your steps, show you work, and then write your answer in a complete sentence.