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Mathematics 7 Online
OpenStudy (anonymous):

Karl receives a special book offer in the mail. He can buy as many books as he wants from a list for $5.00 per book. Additionally, Karl gets a complimentary $3.00 off for participating in the offer. The equation y = 5x - 3 gives his final cost, y. If x = 10, then what is the ordered pair (x, y)?

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