Liquid leaked from a damaged tank at a rate of r(t) liters per hour. The rate decreased as time passed and values of the rate at four-hour time intervals are shown in the table. t (hr) r(t) (L/h) 8.1 7.5 6.9 6.4 5.9 5.4 0 4 upper estimate- Question Help: Video Submit Question 8 12 16 20 Find lower and upper estimates for the total amount of liquid that leaked out. lower estimate- liters liters

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