Quasimodo has a demand function for earplugs that is given by the equation D(p) = 100 - p
A) If the price of earplugs is $50, how many earplugs will he consume?
B) If the price of earplugs s $70, how many earplugs will he consume?
C) What is the change in net consumer's surplus when the price changes from $50 to $70?