Mathematics, 03.12.2020 01:00 puppylove899

Marco has a $15.00 gift card to a movie theater. He wants to buy each of his friends a $3 candy bar. The function f(x)=3x-15 represents the amount of cash needed to purchase x candy
bars after using his gift card. He brings 7 friends. How much of his own money does he need
to spend to buy all 7 friends a candy bar?

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Marco has a $15.00 gift card to a movie theater. He wants to buy each of his friends a $3 candy bar...

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