An adult says "I can't believe that singers, actors, and athletes get tens-of-million of dollars when the teachers of your children (THE CHILDREN) are paid such an ordinary salary." Explain why they are wrong using these phrases: 1)scaling up or scaled up, 2) cannot be scaled up, 3) central distributer, 4) no central distributer. (2 paragraphs)

In a perfectly competitive market, the long-run market supply curve tends to be horizontal or nearly so. what is another way to state this fact? (a) market supply is much more elastic in the long run than the short run. (b) in the long run, average total cost is minimized. (c) in the long run, price equals marginal cost. (d) market supply is much less elastic in the long run than the short run.