Mathematics, 30.10.2019 04:31, samlolomg123

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 33 minutes of calls is $26.04, and the remaining credit after 61 minutes of calls is $22.68. what is the remaining credit after 78 minutes of calls? calling time (in minutes)remaining credit (in dollars)

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The credit remaining on a phone card (in dollars) is a linear function of the total calling time mad...