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Problem
What is the expression for the initial amount
y
0
y_0
y
0
in terms of a later measurement
y
y
y
, the constant
k
k
k
, and the elapsed time
t
t
t
when the quantity satisfies
y
=
y
0
e
k
t
y=y_0 e^{kt}
y
=
y
0
e
k
t
? a)
y
e
k
t
y e^{k t}
y
e
k
t
b)
y
k
t
y k t
y
k
t
c)
y
e
−
k
t
y e^{-k t}
y
e
−
k
t
d)
y
k
t
\dfrac{y}{k t}
k
t
y
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