Question 449335
the half life of strontium-90 is approximately 28 years.
 write a formula,p(t), that models the percent of strontium-90 after t years.
:
The radioactive decay formula
A = Ao*2^(-t/h)
Where
A = resulting amt after t time
Ao - initial amt
h = half-life of substance
t = time of decay
:
To find percent here, you could write it
p(t) = 100*2^(-t/28)