Explain how each of the following would cause demand or supply to shift and how the equilibrium price and quantity for the good or service in question would change.

a. A decrease in the number of builders in a housing market

b. Expectations by automobile buyers that new, more efficient hybrids will be on the market next year

c. An increase in the popularity of organic peanut butter

d. A wage increase paid to a hospital’s employees

e. A cost-reducing innovation adopted by the producers of washing machines communication device

f. The identification of a food as high in cholesterol 

g. A fall in income by buyers of fine antique jewelry