In 2009, high-income economies with only about one eighth of the world's population produced almost three-fourths of the worlds output

During the years from 1964 to 1969, inflation increased in the United States

A) when the AD curve shifted up and to the right, even though the SRAS curve remained stable. B) when the SRAS curve shifted up and to the left, even though the AD curve remained stable. C) when the AD curve shifted up and to the right and the SRAS curve shifted up and to the left. D) despite the AD and SRAS curves remaining stable.

Which of the following best explains why garbage collectors are paid a higher wage than many others with comparable skills?

a. because of the dangers associated with collecting trash b. because garbage collectors work much longer hours on average than do those in other jobs c. because of the unpleasantness associated with trash collection d. because garbage collectors possess skills that are in relatively high demand