Phone company a offers long-distance calling for 3 cents per minute but charges a $18 monthly fee in addition to the per minute charge. phone company offers long-distance service for 9 cents per minute with no monthly charge. how many minutes per month must you talk to make phone company a the best deal? istance calling for 3 cents per minute but charges a $18 monthly fee in addition to the per minute charge. phone company offers long-distance service for 9 cents per minute with no monthly charge. how many minutes per month must you talk to make phone company a the best deal?