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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

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 24 12 and the remaining credit after 73 minutes of calls is 19 78 What is the remaining credit after 82 minutes of calls Remaining credit in dollars Calling time in minutes 1 X S

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