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Water is pumped out of a holding tank at a rate of 5 - 5e-0.12t liters/minute, where t is in minutes since the pump is started.
Water is pumped out of a holding tank at a rate of 5 - 5e-0.12t liters/minute, where t is in minutes since the pump is started. If the holding tank contains 1000 liters of water when the pump is started, how much water does it hold one hour later?