Price (per ride) $7.50 7.00 6.50 6.00 5.50 4.50 4.00 3.50 3.00 2.50 2.00 5 6 7 8 9 10 11 12 13 14 15 Quantity (millions of rides per year) The following graph shows the market for the long-distance bus rides. In the absence of taxes, the equilibrium price of a ride is $5 and the equilibrium quantity is 10 million rides. Suppose that regulator levies an excise tax on bus service providers. The amount of excise tax equals $2 per ride How much will buyers pay for a bus ticket after the tax is imposed? O $5 O $5.50 $4.50