An exponential function has a decay factor of 0.50. What is the percentage decay rate?

Answer 1

1/2 = half life of e^rt

ln.5 = rt

r = ln5/t = rate of decay

or

P = Poe^-.5t

P/Po = e^-.5t

ln(P/Po) = -.5t

t = (ln(P/Po))/-.5 = time period of decay of .5

or maybe all you want is to convert .50 to percent

-.50 = -50% decay rate