Double counting occurs because most products that people purchase are manufactured by the same company

When households' marginal propensity to consume (MPC) increases, the size of the spending multiplier:

a. also increases. b. decreases. c. remains unchanged. d. reacts unpredictably.

As more people become self-employed, which allows them to determine how many hours they work per week, we would expect the deadweight loss from the Social Security tax to

a. increase, and the revenue generated from the tax to increase. b. increase, and the revenue generated from the tax to decrease. c. decrease, and the revenue generated from the tax to increase. d. decrease, and the revenue generated from the tax to decrease.