SOLUTION: Let r be the rate at which a plane can fly in calm air. Write a variable expression for the time it would take the plane to fly 400 mi into headwind of 40 mph.
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Question 1127960: Let r be the rate at which a plane can fly in calm air. Write a variable expression for the time it would take the plane to fly 400 mi into headwind of 40 mph. Answer by ikleyn(52794) (Show Source):
