Sandy notices a dog tied to a chain behind a fence and recognizes it as belonging to an acquaintance who lives a couple of blocks away. sandy goes to the acquaintance’s house and says, "your dog is tied up in someone’s yard, and for $100 i will tell you where. the dog’s owner says, "no way! i can’t believe you won’t simply tell me where the dog is! " the dog’s owner drives around the neighborhood and finds the dog and retrieves it. the next day sandy notices an advertisement in the paper where the owner offered a reward of $200 for information leading to the return of her dog. sandy is: