In the late 1800s and early 1900s, the primary source of energy for manufacturing was

The figure above shows how the PPF for cell phones and new cell-phone factories can expand. In the figure, if the economy produced 4 million cell phones using the resources efficiently, the PPF would

A) expand farther than shown in the figure. B) expand along the vertical axis and not along the horizontal axis. C) expand, but not as far as shown in the figure. D) expand evenly along both axes. E) not expand.

The central idea distinguishing the "efficiency wage model" is that the wage paid by Firm A relative to the wages at other firms helps determine

A) Firm A's demand for labor. B) the amount of labor Firm A can hire. C) the productivity of Firm A's workers. D) Firm A's markup fraction.