Consider two-sided, one-to-one matching between three women (Xena, Yasmeen, and Zelda) and three men (Arnie, Barney, and Calvin). Their ranking are as follows:

Arnie: Xena, Yasmeen, Zelda, Arnie

Barney: Yasmeen, Zelda, Barney, Xena

Calvin: Xena, Zelda, Calvin, Yasmeen

Xena: Arnie, Barney, Calvin, Xena

Yasmeen: Barney, Calvin, Arnie, Yasmeen

Zelda: Barney, Arnie, Zelda, Calvin

Which of the following matchings is efficient?

A. Arnie:Xena, Barney:Barney, Calvin:Zelda, Yasmeen:Yasmeen
B. Arnie:Arnie, Barney:Barney, Calvin:Zelda, Xena:Xena, Yasmeen:Yasmeen
C. Arnie:Yasmeen, Barney:Xena, Calvin:Zelda
D. Arnie:Yasmeen, Barney:Xena, Calvin:Calvin, Zelda:Zelda
E. Arnie:Xena, Barney:Yasmeen, Calvin:Zelda

Consider the market for gasoline. suppose that, in a competitive market without government regulations, the equilibrium price of gasoline is $3.00 per gallon, and employees at gas stations earn $17.50 per hour. complete the following table by indicating whether each of the statements is an example of a price ceiling or a price floor and whether it results in a shortage or a surplus or has no effect on the price and quantity that prevail in the market. statement price control effect the government has instituted a legal minimum price of $3.40 per gallon for gasoline. the government prohibits gas stations from selling gasoline for more than $3.40 per gallon. due to new regulations, gas stations that would like to pay better wages in order to hire more workers are prohibited from paying more than $14.50 per hour.

The cook corporation has two divisions--east and west. the divisions have the following revenues and expenses: east west sales $ 603,000 $ 506,000 variable costs 231,000 300,000 traceable fixed costs 151,500 192,000 allocated common corporate costs 128,600 156,000 net operating income (loss) $ 91,900 $ (142,000 ) the management of cook is considering the elimination of the west division. if the west division were eliminated, its traceable fixed costs could be avoided. total common corporate costs would be unaffected by this decision. given these data, the elimination of the west division would result in an overall company net operating income (loss)

By which distribution system is more than 90 percent of u. s. coal shipped? a. pipelinesb. trucksc. waterwaysd. railroadse. none of the above