Posted by Sandi on Friday, July 5, 2013 at 9:33pm.
Two commons sources of nicotine are cigarettes and cigars. Find the probability that a randomly selected adult does not smoke cigarettes.

algebra (incomplete)  PsyDAG, Saturday, July 6, 2013 at 1:15pm
Lacking needed data.

algebra  Kingsland, Thursday, August 1, 2013 at 10:26am
2.56x105
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