Raymond B. answered • 05/24/21
Tutor
5
(2)
Math, microeconomics or criminal justice
f(x) = 6(3)^(x-1)
you can think of it as a geometric sequence, 1st term is 6, common ratio = 3
the radioactive substance had a half life of 130 years
amount remaining = A= 160e^-rt
r= rate of decay, t = time in minutes
1/2 = e^-130r
ln.5 = -130r
r = ln.5/-130 = -.69315/-130 = ,005332
A(t) = 160e^-.005t
or
an =160e^-.005n
