1 *2 Problem: Cardo and Alyana already reached El Nido, Palawan. They were both Marco's house. Alyana rode her bicycle 3 miles west of Marco's house and Cardo rode his bicycle 3 miles east of Marco's house. Who travelled a greater distance from Marco's house? Is it Cardo or Alyana? 1. Questions to Ponder: 1. What subset of real numbers has been used in the problem? How would you represent the trip of Cardo and Alyana from the house of Marco using the number line? 2. How would you describe two opposite integers on the number line? Can you give? 3. What does it mean for the same distance travelled but in opposite directions? How would you interpret using the numbers -3 and +3? 5​