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Use the table below for the number of gallons, V(t) , of oil that remain in a 55-gallon oil barrel, t hours after a forklift operator dropped the container onto the loading dock and pierced a hole in the container. 0 2 3 3.5 5 6 8 V (t) 55 54.6 52.8 49.6 42.1 40.8 38.4 37.9 Estimate V' (2.5) gal/hr For what interval of time is the oil leaking the fastest?