13 Think about the demand for the three game consoles:

Xbox, PS3 and Wii. Explain the effect of the following events on the demand for Xbox games and the quantity of Xbox games demanded, other things remaining the same.

a The price of an Xbox falls.

b The prices of a PS3 and a Wii fall.

c The number of people creating Xbox games increases.

d Consumers’ incomes increase.

e Programmers who write code for Xbox games become more costly to hire.

f The expected future price of an Xbox game falls.

g A new game console that is a close substitute for Xbox comes onto the market.