3. (5 points) An elevator moves up and down a building so that its height above the ground (in floors) after t seconds is s(t) = t-t+4. (a) Find the velocity of the elevator at time t.

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Chapter1: Functions And Models
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3. (5 points) An elevator moves up and down a building so that its height above the ground (in
floors) after t seconds is
s(t) = t-t+ 4.
(a) Find the velocity of the elevator at time t.
Transcribed Image Text:3. (5 points) An elevator moves up and down a building so that its height above the ground (in floors) after t seconds is s(t) = t-t+ 4. (a) Find the velocity of the elevator at time t.
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