Microsoft filed a law suit against people who sent spam (junk e-mail) and a web site owner who hosted spam services. a spokesman for microsoft said that microsoft was "trying to change the economics of spam" by increasing the cost of being a spammer. an economist would most likely agree with which statement about microsoft's actions? a. a more effective approach would be to educate spammers about the costs they impose on others. b. a more effective approach would be to appeal to the morals of the spammers and tell them to follow the golden rule. c. microsoft's approach of trying to change the costs of spamming is the most effective way to change behavior. d. microsoft should not be involved because spamming is just part of the invisible hand at work and should be left alone.

Ms. sophia jones, the company president, has heard that there are multiple breakeven points for every product. she does not believe this and has asked you to provide the evidence of such a possibility. some information about the company for 2017 is as follows:

The market price of cheeseburgers in a college town increased recently, and the students in an economics class are debating the cause of the price increase. some students suggest that the price increased because the price of beef, an important ingredient for making cheeseburgers, has increased. other students attribute the increase in the price of cheeseburgers to a recent increase in college student enrollment.1. the first group of students thinks the increase in the price of cheeseburgers is due to the fact that the price of beef, an important ingredient for making cheeseburgers, has increased. (what happened to demand and supply, shift to the right or left)2. the second group of students attributes the increase in the price of cheeseburgers to the increase in college student enrollment. (what happens to demand and supply, shift to the right or left)3. suppose that both of the events you analyzed above are partly responsible for the increase in the price of cheeseburgers. based on your analysis of the explanations offered by the two groups of students, how would you figure out which of the possible causes was the dominant cause of the increase in the price of cheeseburgers? (choose a, b,c, or d)a)if the price increase was small, then the supply shift in the market for cheeseburgers must have been larger than the demand shift.b)if the equilibrium quantity of cheeseburgers decreases, then the demand shift in the market for cheeseburgers must have been larger than the supply shift.c)if the equilibrium quantity of cheeseburgers decreases, then the supply shift in the market for cheeseburgers must have been larger than the demand shift.d)whichever change occurred first must have been the primary cause of the change in the price of cheeseburgers.

Arival company manufactures fuel tanks for cars using a different production technique. the total weekly cost (in dollars) of producing x tanks is given by c(x) = 10000 +90x - 0.04x2 find the marginal cost at a production level of 500 fuel tanks per week to approximate the cost of the 501st unit (round to the nearest 2 decimal places, if needed)