Marco's Busy Morning Marco had an important job interview at 10:00 AM. He knew he had to leave early because the subway can sometimes run late. He walked to the bus stop and checked his transit app to see when the bus would show up. When the bus arrived, Marco used his Presto card to tap on. He heard a loud beep and saw a red light; his balance was too low! "Don't worry," the driver said. "You can top up your card at the station." Marco paid the fare with exact change and too