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Mathematics, 20.10.2020 05:01 madi1820

9. Verizon offers a cell phone plan that includes a flat fee of $85 per month for the first phone and $7.50 a month for each additional phone. If Maria's phone bill was $115, how many extra phone lines does she
have?

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9. Verizon offers a cell phone plan that includes a flat fee of $85 per month for the first phone an...
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