Higher marginal propensities to consume and invest will make the slope of the aggregate expenditure function steeper

The main reason that the 1975, 2008, and 2009 tax cuts did not have a large effect on GDP is that they were

a. temporary surcharges rather than permanent surcharges. b. permanent surcharges rather than temporary surcharges. c. temporary tax cuts rather than a permanent tax cuts. d. permanent tax cuts rather than a temporary tax cuts.

Some economists have suggested that network externalities result in consumers being locked into the use of products with inferior technologies. Economists Stan Leibowitz and Stephen Margolis have studied cases that have been cited as examples of this and

found A) there is no convincing evidence that the alternative technologies were superior. B) consumers sometimes do become locked into the use of products with inferior technologies. C) that in all of these cases network externalities resulted in market failure. D) that consumers use products with inferior technologies when their prices are lower than products with superior technologies.