An object’s weight depends
on its height above the surface of the earth. If a man weighs 190 pounds on the
surface of the earth, then the man's weight in pounds (W) x miles above the
surface is approximated by the formula: 


W = (190
4,000^2) / (4,000+x)^2 

For each problem below, approximate the weight
of a 190-pound person at the given height above the surface of the earth. 


Remember, 1 mile = 5,280 feet. 

1. 100 miles 

2. 1,000 miles 

3. 1,056,000 feet 

4. 10,000,000 feet