from xz to they 27. Finance An idealized version of the Laffer curve (originated by economist Arthur Laffer) is shown in the accompanying graph. X], may actually increase the total revenue to the government. are taxed at a lower rate, which means higher total tax revenues than would be the case at a higher rate. Suppose that the Laffer where f(x) is government revenue (in billions of dollars) from a tax rate of x percent. Find the revenue from the given tax rates. According to this theory, decreasing the tax rate, say, The theory is that people will work harder and earn more if curve is given by the function x(x 100)(x - 160) f(x) = (0