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 1100 grams and mass was decreasing by 10% 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

Step-by-step explanation:

Formula= an=a1r^n-1

a13=1100(0.9)13-1

a13=310.7