A nation’s standard of living is determined by a. factors and events that are beyond the nation’s control. b. the percentage of its GDP that is accounted for by government purchases. c. the productivity of its workers. d. the quantity of natural resources with which it is endowed.

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When the federal reserve buys bonds from or sells bonds to member banks, it is called monetary policy reserve ratio interest rate adjustment open market operations

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?