If the number of unemployed workers is 19 million, the number in the working-age population is 500 million, and the unemployment rate is 4%, how many workers are in the labor force?

If the economy's capital stock increases over time

A) net investment is positive. B) depreciation is less than zero. C) depreciation exceeds gross investment. D) gross investment equals depreciation.

Given the information in Figure 18.1, the competitive output in the corbomite industry is:

A) Q0. B) Q1. C) Q2. D) any level as long as price is P0.