Question
Let $r(t)$ be the rate at which the world's oil is consumed, where $t$ is measured in years starting at $t=0$ on January $1,2000,$ and $r(t)$ is measured in barrels per year. What does $\int_{0}^{8} r(t) d t$ represent?
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In general, the integral of a rate function over an interval gives the total amount of the quantity related to the rate that has accumulated over that interval. Show more…
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