If the marginal propensity to save is equal to 0.5 in the simple Keynesian model, then a 10-unit increase in government spending will cause output to rise by

The Confederacy's primary mechanism for generating revenue during the Civil War was to:

a. Raise taxes. b. Increase trade and gain more money from exports. c. Borrow more money. d. Print more money.

Lead is an important input in the production of crystal. If the price of lead decreases, then we would expect the supply of

a. crystal to be unaffected. b. crystal to decrease. c. crystal to increase. d. lead to increase.