SOLUTION: A cellular phone company offers a contract for which the cost C; in dollars of t minutes of telephoning is given by C=0.25 (t-600)+70.95, where it is assumed that t≥600 minut
Question 326617: A cellular phone company offers a contract for which the cost C; in dollars of t minutes of telephoning is given by C=0.25 (t-600)+70.95, where it is assumed that t≥600 minutes. What times will help keep cost between $110.70 and $145.45? Answer by Fombitz(32388) (Show Source):
