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Mathematics, 28.10.2019 02:31 foreignking02

You and your friend make a lemonade stand. you spend $55 in materials to build the stand. after buying lemonade mix, you determine it costs $0.13 to make each cup of lemonade. you and your friend charge $0.50 per cup of lemonade. how many cups do you need to sell to make back your expenses? ***only need equation***

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