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Posted by on Thursday, February 9, 2012 at 10:56pm.

A certain disease affects 9 out of every 10,000 Americans. In a city of 4.5 milion people, how many would you expect to have the disease.

  • algebra - , Thursday, February 9, 2012 at 11:06pm

    One way to solve this is with a proportion. Cross multiply and solve for x.

    9/10,000 = x/4,500,000

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