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Here is a link to the question:HELP WITH THIS FUNCTIONS QUESTION!!!!!!!!!!!!?

An airplane passes directly over a radar station at time t = 0. The plane maintains an altitude of 4km and is flying at a speed of 560km/hr. Let D represent the distance from the radar station to the plane, and let S represent the horizontal distance traveled by the plane since it passed over the radar station.

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a) Express D as a function of S, and S as a function of T

b) Use composition to express the distance between the plane and the radar station as a function of time.

c) How far from the station is the plane 10 minutes later?

HELP WITH THIS FUNCTIONS QUESTION!!!!!!!!!!!!? - Yahoo! Answers

I have posted a link there to this topic so the OP can find my response.