Suppose demand for a good is QD = 100 - P and supply is QS = -20 + P. What is the equilibrium price?

A policymaker would prefer that the lag in the effect of a policy be

A) long and variable in magnitude or size. B) short and fixed in magnitude or size. C) long and fixed in magnitude or size. D) short and variable in magnitude or size.

In year 2000 dollars, per pupil expenditures on education in the United States in 1940 was around _____

a. $500 b. $1000 c. $2000 d. $4000