Dana and Terri both start jogging south from the same place at the same time. After half an hour, Dana is farther south than Terri. They are less than a mile apart when they stop jogging. Which inequality models the situation? 0.5x – y < 1 0.5x – 0.5y < 1 0.5x + y < 1 0.5x + 0.5y < 1