In the case of a perfectly competitive firm, the optimal markup over marginal cost is 0 percent

Of the $840 billion American Recovery and Reinvestment Act stimulus package which was enacted in 2009, approximately ________ took the form of tax cuts and ________ took the form of increases in government expenditures

A) one-third; two-thirds B) one-tenth; nine-tenths C) one-half; one-half D) three-fourths; one-fourth

In an economy where actual real GDP is always equal to the natural real GDP, inflation

A) settles down to zero percent. B) is at the same rate as GDP growth. C) is constant at a rate that can be low or high. D) fluctuates around an average of zero percent.