Frank ordered playoff tickets for himself and three friends. There is a $7 service fee per ticket and an additional shipping cost of $12 for the entire ticket order

Respuesta :

y = 7x + 12.....x = number of tickets and y = total cost

and there are 4 tickets ordered (Frank and 3 friends)...so x = 4

y = 7(4) + 12
y = 28 + 12
y = 40 <=== so he paid 40 bucks for them
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