SOLUTION: A cellular phone company offers a contract for which the cost C, in dollars, of t minutes given by C=0.25(t-600)+53.95, where ity is assumed that t>600 minutes. What times will kee
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Question 286091: A cellular phone company offers a contract for which the cost C, in dollars, of t minutes given by C=0.25(t-600)+53.95, where ity is assumed that t>600 minutes. What times will keep costs between $93.45 and $131.20?
For the cost to be between $93.45 and $131.20, the telephoning time must be between ___ minutes and ___ minutes. Answer by richwmiller(17219) (Show Source):
