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Mathematics, 21.10.2020 01:01 Mikec123

The altitude(a in feet) of a plane(t) minutes after liftoff is given by a=3400t+600. How many minutes after liftoff is the plane at an altitude of 21,000 feet?

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The altitude(a in feet) of a plane(t) minutes after liftoff is given by a=3400t+600. How many minute...
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