Discuss one or two factors (Income-price-price related goods- consumer preference -expectaion future) that affect in demand. The research should be with time period between 2000 and 2012 and place (in usa).
In introduction:mention why did you choose this subject and the importance of it and state the problem. the research should includes table that show the decrease or increase in demand and function. the number of pages 20 .not high level language