An elementary school sells tickets to the school play to raise money for new playground equipment. A total of 103 tickets are sold with ticket prices of $7 per adult and $5 per child. The school raised $635 from ticket sales. For the following problems, Use $x$ for the number of adults and $y$ for the number of children.

a) Write an equation that shows how $x$ and $y$ are related to the total number of tickets sold. The total number of tickets sold should be the right hand side of your equation.
Answer:

b) Write an equation that shows how $x$ and $y$ are related to the total number of dollars earned from the ticket sales. The total number of dollars earned should be the right hand side of your equation.
Answer:

c) How many children attended the play?
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