Mathematics, 27.06.2019 00:00 devaughnnorthcu8221

Dwayne has $80 to spend on video games. used video games cost $10 each, and new video games cost $20 each. what equation in standard form determines the number x of used video games and the number y of new video games he can buy?

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Dwayne has $80 to spend on video games. used video games cost $10 each, and new video games cost $20...