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OpenStudy (anonymous):
The amount A (in grams) of radioactive plutonium remaining in a 20-gram sample after t days is given by the formula: a=20*(1/2)^(t/140). At what rate is the plutonium decaying when t=2?
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OpenStudy (anonymous):
Equation\[A=20(\frac{ 1 }{ 2 })^{\frac{ t }{ 140 }}\]
OpenStudy (anonymous):
pleassse help
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