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Carla Vista Enterprises uses a computer to handie its sales inwoices. Lately, business has been so good that it takes an extra 3 hours per night, plus every third Saturday, to keep up with the volume of sales imvices. Management is considering updating its computes with a faster model that would eliminate all of the overtime processing If sold now, the current machine would have a salvage value of $10,400 if operated for the remainder of its iseful life, the current machine would have zero salvage value. The new machine is expected to have zero salvage value after 5 years. Prepare an incremental analysis to determine whether the current machine should be replaced. fin the first two columns, enter costs and openses as positive amounts, and any amounts recelved as negative arnounts. In the third column enter net income incrasus as positive amounts and decreases as negotive arnounts. Enter negative amounts using either a negotive sign preceding the number es:-45 or partentheoes eg. (45) The current machine should be