The sale of

A) a used textbook does enter GNP.
B) a used textbook does not enter GNP, but the sale of a used house does.
C) both a used textbook and a used house do not enter GNP.
D) a used house does not enter GNP, but the sale of a used book does.
E) the GNP does not include sale of used items priced below $1000.

When a company produces and sells x thousand units per week, its total weekly profit is p thousand dollars, where upper p equals startfraction 800 x over 100 plus x squared endfraction . the production level at t weeks from the present is x equals 4 plus 2 t. find the marginal profit, startfraction dp over dx endfraction and the time rate of change of profit, startfraction dp over dt endfraction . how fast (with respect of time) are profits changing when tequals8?

The third program provides families with $50 in food stamps each week, redeemable for both perishable and nonperishable food. the fourth policy instead provides a family with a box of nonperishable foods each week, worth $50. use two graphs to illustrate that a family may be indifferent between the two programs, but will never prefer the $50 box of nonperishable foods over the $50 in food stamps. state your answer and use a consumer choice model for perishable food and nonperishable food to graphically justify your choice.

Acompany sells garden hoses and uses the perpetual inventory system to account for its merchandise. the beginning balance of the inventory and its transactions during september were as follows: