Can someone help me solve for t. Thanks!

(.5)^-(t)/(4.5*10^9) * 100 = 80

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- February 1st 2010, 08:04 PMjsu03Solving for t
Can someone help me solve for t. Thanks!

(.5)^-(t)/(4.5*10^9) * 100 = 80 - February 2nd 2010, 10:37 AMGrandad