Problem 15E

Oil leaked from a tank at a rate of r(t) liters per hour. The rate decreased as time passed and values of the rate at two-hour time intervals are shown in the table. Find lower and upper estimates for the total amount of oil that leaked out. th 0 2 4 6 8 10 rt L/h 8.7 7.6 6.8 6.2 5.7 5.3

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