Business The Marginal Revenue that A Monopoly Firm Faces Questions

Business class and don?t understand how to answer this. Can you ? 1. How does advertising benefit society? In what ways can advertising be  harmful? Give an example (YouTube link) of an effective advertisement  (that had a positive impact on demand). 2. Recalling what you have learned about elasticity, what can you say about  the connection between the price a monopolist chooses to charge and  whether or not demand is elastic, unitary, or inelastic at that price?  (Hint: Examine the marginal revenue curve of a monopolist. The fact that  marginal revenue becomes negative at low prices implies that a portion  of the demand curve cannot possibly be chosen.) Please include an  example with your posting.