Suppose that the supply curve for optometrists is given by Ls= -6+ 0.6W while the demand curve is given by Ld= 50-W, where W = annual earnings in thousands of dollars per year and L = number of optometrists. a. Find the equilibrium wage and employment levels. b. Now, suppose that the demand for optometrists increases and the new demand curve is Ld' = 60 - W Assume that this market is subject to cobwebs because it takes about three years to produce people who specialize in optometry. While this adjustment is taking place, the short-run supply of optometrists is fixed. Calculate the wage and employment levels in each of the first three rounds, and find the new long- run equilibrium. Draw a graph to show these events.