Question

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

Answer 1

1. 390 = 1.5x – 1.5y 
2. 75 = 4x + 4y 
3. 0.5x – 0.5y < 1 
4. Dana: 6 mph, Terri: 5 mph 
Dana: 5.5 mph, Terri: 5 mph