Regardless of area of expertise, a public school pays all teachers the same annual wage. At $70,000, it hires good teachers in all areas except science. Because science is a field in demand, the school can only hire poor science teachers. It would have to pay science teachers $90,000 to hire good science teachers. If one out of five teachers is a science teacher, what is the marginal expense of getting a good science teacher instead of a poor one?

Which of the following is not part of the mission statement of the department of homeland security? lead the unified national effort to secure america protect against and respond to threats and hazards to the nation ensure safe and secure borders coordinate intelligence operations against terrorists in other countries

Suppose that two firms produce differentiated products and compete in prices. as in class, the two firms are located at two ends of a line one mile apart. consumers are evenly distributed along the line. the firms have identical marginal cost, $60. firm b produces a product with value $110 to consumers.firm a (located at 0 on the unit line) produces a higher quality product with value $120 to consumers. the cost of travel are directly related to the distance a consumer travels to purchase a good. if a consumerhas to travel a mile to purchase a good, the incur a cost of $20. if they have to travel x fraction of a mile, they incur a cost of $20x. (a) write down the expressions for how much a consumer at location d would value the products sold by firms a and b, if they set prices p_{a} and p_{b} ? (b) based on your expressions in (a), how much will be demanded from each firm if prices p_{a} and p_{b} are set? (c) what are the nash equilibrium prices?

Which of the following statements about revision is most accurate? (a) you must compose first drafts quickly (sprint writing) and return later for editing. (b) careful writers always revise as they write. (c) revision is required for only long and complex business documents. (d) some business writers prefer to compose first drafts quickly and revise later; others prefer to revise as they go.