November 30, 2015

Homework Help: Algebra

Posted by Norma on Sunday, September 5, 2010 at 11:05pm.

a cellular phone company offers a contract for which the cost C in dollars of t minutes is given by C 0.25 (t-300)+ 61.95 where it is assumed that t 300 minutes what time will keep $99.45 and 145.95

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