SOLUTION: Find the associated half-life time or doubling time. Q = 1900e−0.025t

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Question 946222: Find the associated half-life time or doubling time.
Q = 1900e−0.025t
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
When t=0,Q=1900
Find t when, Q=%281%2F2%291900
%281%2F2%291900=1900e%5E%28-0.025t%5Bh%5D%29
ln%281%2F2%29=-0.025t%5Bh%5D
t%5Bh%5D=-%28ln%281%2F2%29%2F0.025%29
approximately,
t%5Bh%5D=27.73