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OpenStudy (anonymous):
media services charges 40 for a phone and 20 a month for plan find a model that detrmine the total cost c(t) of operating a media service phone for t months
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OpenStudy (saifoo.khan):
Online college?
OpenStudy (anonymous):
\[COST(t)= 20(t) +40\]20 will be paid every month and 40 is a one time only payment, t is time establish as months.
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