matching

a) decrease in the price of cars 1) change in demand for cars

b) decrease in the supply of cars 2) change in quantity demand for cars

c) increase in the price of gasoline 3) neither, (does not represent change in demand or change in quantity demanded)

d) increase the price of cars

e) decrease in consumer's incime

f) increase in number of people using public transportation( such as buses and trains)