Macroeconomics is the study of
A) how households make choices.
B) how firms make choices.
C) how households and firms make choices.
D) the economy as a whole.
Classifying a good as rival means
A) that the good is produced in a competitive market.
B) that there is a shortage of the good.
C) that when one person consumes a unit of the good no one else can consume it.
D) anyone who does not pay for the good cannot consume it.
If the CPI changes from 125 to 120 between 2012 and 2013, how did prices change
between 2012 and 2013?
A) Prices increased by 5%.
B) Prices decreased by 5%
C) Prices increased by 25%.
D) Prices decreased by 4%.