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March 1, 2015

March 1, 2015

Posted by **meghan** on Sunday, November 20, 2011 at 10:27pm.

- algebra -
**Steve**, Sunday, November 20, 2011 at 11:37pmafter h hours,

40 * (1/2)^(h/9)

That's because for every 9 hours, the amount is multiplied by 1/2

so, after 4 days = 96 hours, we will have

40 * (1/2)^(96/9) = .0246 mg

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