If a firm estimates that its costs will fall by 10 percent each time volume doubles for its product, then the cost of the l,000th unit produced and sold will be about 90 percent of the cost of the 500th unit, and the 2,000th unit will be 90 percent of the l,000th unit. Therefore, if the cost of the 500th unit is $100, the cost of the 4,000th unit would be .A. $81.00.
B. $72.90.
C. $100.00.
D. $0.
E. $90.00.

The market for corn in country a is highly competitive. at the current market price of $5/bushel there is a shortage of 100,000 bushels of corn in this country. media reports claim that the price of corn will rise drastically in the near future. according to these reports, the neighboring country b had witnessed a similar situation recently. at the same price, the shortage in country b was also 100,000 bushels and eventually the equilibrium price in b went up to $10/bushel. both countries are known to have equal number of corn producers and the market supply of corn is identical at all prices. this, combined with the fact that consumers in the two countries also have similar tastes and preferences, led the media to conclude that the price of corn in country a would soon be as high as $10/bushel. the new equilibrium price turns out to be below $10/bushel, what inferences can be drawn?

Acrosswalk_when there are no pavement markings.

List three careers that require knowledge of science. list three careers that require the use of of math. list three careers that require the use of foreign language. list three careers that require the use of good writing skills. list three careers that require the use of good computer skills.