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4 votes
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?

The plane reaches an altitude of 21,000 feet __ minutes after liftoff.

asked
User Opensas
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8.3k points

1 Answer

4 votes

Answer:6 minutes

Explanation:

answered
User RAJNIK PATEL
by
7.9k points
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