In the context of your gold model analyze the impact of the following changes in economic conditions on the equilibrium price and quantity of gold. Show your result in a supply-demand graph of the U. S. gold market.

a) Economic growth continues which increases household disposable income.

b) Interest rates decrease impacting gold market.

c) Gold production increases due to improved drilling technology.

d) Tariffs on steel increase the costs of producing gold.

e) South Africa reduces gold production due to labor strikes in mines.