In the short run, finding the optimal amount of variable input involves which relationship?

When net taxes increase and government purchases decrease, _____

a. the price level will rise b. money supply must rise c. the aggregate demand curve shifts leftward d. output and employment increase e. the aggregate supply curve shifts leftward

The rules established under the General Agreement on Tariffs and Trade (GATT) are enforced by an international body called the World Trade Organization (WTO)

a. True b. False Indicate whether the statement is true or false