Question

In a lab experiment, the decay of a radioactive isotope is being observed. At the

beginning of the first day of the experiment the mass of the substance was
and mass was decreasing by
500 grams
8% per day. Determine the mass of the radioactive
sample at the beginning of the 13th day of the experiment. Round to the nearest tenth
(if necessary).

Answer 1

Answer: a13=310.7

Explanation:

Formula= an=a1r^n-1

a13=1100(0.9)13-1

a13=310.7