Microeconomics 2nd Edition by Douglas Bernheim

Exercise 3

According to your preferences, do the following pairs of products serve as complements or substitutes Do your answers depend on the contexts in which the goods are used Please explain each answer.
a. Bread and butter.
b. Ballpoint pens and computers.
c. Facsimile service and mail service.
d. Movies and video games.
e. Gasoline and ethanol.
f. Wireless telephone service and standard (wired) telephone service.
g. Different CDs recorded by the same rock group.
h. Lettuce and ground beef.