Monday

October 20, 2014

October 20, 2014

Posted by **Bean** on Wednesday, February 28, 2007 at 6:09pm.

It decays 1/2 each 30 years.

time amount left

30 1/2

60 1/4

90 1/8

see the pattern?

Mathematically, it can be written as

amountleft/originalamount= (1/2)

or in logs

amount left/originalamount=e

Saved by Bob again! Thank you!

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