the weight (in pounds) w=f(d) of an object varies inversely as the square of its distance (in thousands of miles) d from the center of earth. a. an astronaut weighs 180 pounds at sea level (about 4 thousand miles from earth's center) find an equation of F. b. how much would the astronaut weight at 2 thousand miles about earth's surface? c. at what distance from the center of earth would the astronaut weigh pound?  miles? ( round to the nearest miles as needed)

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