Marburg Manufacturing Company purchased a machine on January 2, 20x2. The invoice price of the machine was 40,000, and the vendor offered a 2 percent discount for payment within ten days. The following additional costs were incurred in connection with the machine: Transportation-in - 1,200; Installation cost - 700; Testing costs prior to regular operation - 550. If the invoice is paid within the discount period, Marburg should record the acquisition cost of the machine at?