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 2-hour time intervals are shown in the table. Find lower and upper estimates for the total amount of oil that leaked out.

Please check my work :)

Question

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 2-hour time intervals are shown in the table. Find lower and upper estimates for the total amount of oil that leaked out.

Please check my work :)

babynini · Answer

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babynini · Answer

Upper sum: 2(8.7+7.6+6.8+6.2+5.7) = 70
Lower sum: 2(7.6+6.8+6.2+5.7+5.3) = 63.2

babynini · Answer

haha, right. Should I write those steps out?