Answer
8.35%
Work Step by Step
$y=100*(2.7)^{-.1*x}$
$x=25$
$y=100*(2.7)^{-.1*x}$
$y=100*(2.7)^{-.1*25}$
$y=100*(2.7)^{-2.5}$
$y=100*.08348$
$y=8.348$
$8.35$ percent
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