Corrigon Industries is preparing a bid for a special project requiring the production of 35,000 units. The engineering personnel have advised that the units can be produced in groups with the first group consisting of 1,000 units. A review of prior experience indicates that the direct labor time needed per unit will be progressively smaller by a constant percentage rate as experience is gained in the production process. The quantitative method that would best estimate Corrigon’s total cost for the project is