What effect does a $ specic tax have on equilbirium price and quantity, and what is the incidence on consumers, if the following is true: a) The demand curve is perfectly inelastic. b) The demand curve is perfectly elastic. c) The supply curve is perfectly elastic. d) The demand curve is perfectly elastic and the supply curve is perfectly inelastic. Use graphs and math to explain your answers (eg. g; = % should guide your analysis). For question c), consider using L'Hopital's rule