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
44
minutes of calls is
$17.96
, and the remaining credit after
77
minutes of calls is
$12.68
. What is the remaining credit after
100
minutes of calls?
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Home » Mathematics » 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 44 minutes of calls is $17.96 , and the remaining credit after 77 minutes of calls is $12.