I'm working on a business law discussion question and need an explanation and answer to help me learn.
Karen put an advertisement in the newspaper that said that she would pay $700 to anyone who would agree to paint the exterior of her house. Tom, a 17-year-old, answered the ad by telling Karen that he would do the job. Tom went out and bought the paint he needed. Before Tom actually started painting, Karen informed him that she changed her mind, and that she was no longer hiring anybody for the job. Please answer the following questions: 1. Did Karen make a unilateral or bilateral offer? EXPLAIN YOUR ANSWER; 2. Was Tom's answer express or implied? EXPLAIN YOUR ANSWER; 3. If a contract was formed, was it valid, void, or voidable, and at whos' option. EXPLAIN YOUR ANSWER; and 4. Does Tom have any legal rights against Karen? EXPLAIN YOUR ANSWER.