You need to purchase a plan for internet access from an ISP (Internet Service Provider). ISP A charges $109 a month plus 8% tax. ISP B charges $125 a month plus 8% tax, but also offers a 5% discount on timely payment. The discount can only be given on the service itself, not the tax, because the state requires that tax be paid on the full amount of the service before discount. Assuming you will make timely payment; how much will you save each month with the least expensive plan