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Mathematics, 24.03.2021 18:10 pr47723

the credit remaining on a phone card in dollars is a linear function of the total calling time made with the card in minutes. The remaining credit after 42 minutes of calls is $18.28, and the remaining credit after 55 minutes of calls is $16.20 what is the remaining credit after 58 minutes of calls​


the credit remaining on a phone card in dollars is a linear function of the total calling time made

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