Use the demand and supply framework to ascertain what would happen to the price and quantity of DVD players if:
(a) the availability of good movies to play on DVD players increases?
(b) personal income increases?
(c) the price of inputs used to produce DVD player decreases?
(d) ticket prices at local movie theaters decline substantially? In each case, explain the shift in the demand and/or supply curves and illustrate your answer using well-labeled graph(s)