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 1000

grams and mass was decreasing by 15% per day. Determine the mass of the

radioactive sample at the beginning of the 14th day of the experiment. Round to the

nearest tenth (if necessary).

Question

Mathematics

Gaven Blair

12 March, 13:55

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 1000

grams and mass was decreasing by 15% per day. Determine the mass of the

radioactive sample at the beginning of the 14th day of the experiment. Round to the

nearest tenth (if necessary).

+4

Answers (1)

Know the Answer?

Mathias Mcpherson · Answer 1

Answer: 120.91 grams

Step-by-step explanation:

multiply the initial amount by the percent that will remain to the power of n-1, n being the term number, or how many days that have passed.

f (x) = 1000 (0.85) ^14-1