1. Consider two projects.  The first project pays benefits of $90 today and nothing else.  The second project pays nothing today, nothing one year from now, but $100 two years from now.  Which project would be preferred if the discount rate were 0%?  What if the rate increased to 10%?

2. Suppose that the original before-tax demand curve is P = 98-2Q^d and that supply is P = 2+2Q^s.  Now suppose a $3 unit tax is imposed on consumers.
a.  Use supply and demand diagrams to show the effect of a $3-unit tax imposed on the demand side.         
b.  What is the before-tax equilibrium price and quantity?
c.  What is the after-tax equilibrium quantity?
d.  Calculate the economic incidence incurred by producers and the economic incidence incurred by consumers.
e.  How much tax revenue is raised?