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Mathematics, 04.02.2020 21:47 aamu15

The monthly cost for 50 minutes of calls is $14.01 and the monthly cost for 79 minutes is $17.78. what is the monthly cost for 73 minutes of calls?

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The monthly cost for 50 minutes of calls is $14.01 and the monthly cost for 79 minutes is $17.78. wh...
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