Approximately what percentage of U.S. health care spending is financed by public insurance?

Voluntary exchange ________ economic efficiency because neither the buyer nor the seller would agree to a trade unless ________

A) decreases; they both benefit B) increases; they both benefit C) decreases; neither benefit D) increases; only one party benefits

The link between the productivity of labor and the standard of living is

A) tenuous and changing. B) inverse. C) that over the long run, consumers as a whole can increase their rate of consumption only by increasing labor productivity. D) that over the long run, consumers' rate of consumption is not related to labor productivity. E) that the productivity of labor grows much more erratically than the standard of living.