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Mathematics 19 Online
OpenStudy (anonymous):

HELP!! 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 45minutes of calls is $24.60 , and the remaining credit after 71 minutes of calls is$21.48 . What is the remaining credit after 92 minutes of calls?

OpenStudy (anonymous):

|dw:1351800880177:dw|

OpenStudy (anonymous):

50.29$

OpenStudy (anonymous):

not correct

OpenStudy (anonymous):

:( WHAT

OpenStudy (anonymous):

($24.60*90)=?

OpenStudy (anonymous):

ans/45=?

OpenStudy (anonymous):

49.2

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