6.
The half-life of a certain radioactive material is 32 days. An initial amount of the material has a mass of 361 kg. Write an exponential function that models the decay of this material. Find how much radioactive material remains after 5 days. Round your answer to the nearest thousandth.
A) y=2(1/361)1/32x; 0.797 kg
B) y=1/2(1/361)^1/32; 0.1999 kg
C) y=361(1/2)^11/32x; 323.925 kg
D) y=361(1/2)^32x; 0 kg
I think it's C, could anyone help me? Thank you!
1 answer