Question 1033407
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An astronaut r  thousand miles from the center of the earth weighs {{{2880/r^2}}} lbs, and the surface of the earth 4000 is miles from the center.


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(a) If the astronaut is h miles above the surface of the earth, express r as a function of h. 


    r = 4000 + h.


(b) Express the astronaut's weight w in pounds as a function of h.

    w = {{{2880/(4000+h)^2}}}.
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