They finally decided on a lemonade stand, but quickly realized that half of the class was also choosing to start a lemonade stand. Bree turned to Kai and said, "I think we should choose something else. Remember what Ms. Periwinkle was talking about yesterday? It's supply and demand. If there are 6 other lemonade stands in the class, who's going to want to buy from ours?" "Ok," her brother replied. "What about a dog walking business?" Bree considered this for a moment before nodding and suggesting that they go home and work on their