Situation:
A 40 gram sample of a substance that's
used for drug research has a k-value of
0.1472.
N = Noekt
No = initial mass (at time t = 0)
N = mass at time t
k = a positive constant that depends on
the substance itself and on the units
used to measure time
t = time, in days. Find the substances half life, in days. Round to the nearest tenth.