The table below shows the initial and final masses of a radioactive material in a container.
Based on the table, which of these conclusions is correct?

Initial Mass (in kilograms)- 0.8
Final Mass (in kilograms)- 0.05

A. The half life of the material is three years.
B. The half life of the material is four years.
C. The mass of the material was 0.1 kilograms after four half lives.
D. The mass of the material was 0.1 kilograms after three half lives.

Question

The table below shows the initial and final masses of a radioactive material in a container. 
Based on the table, which of these conclusions is correct?

Initial Mass (in kilograms)- 0.8
Final Mass (in kilograms)- 0.05

A. The half life of the material is three years.
B. The half life of the material is four years.
C. The mass of the material was 0.1 kilograms after four half lives.
D. The mass of the material was 0.1 kilograms after three half lives.

anonymous · Answer

@anonymous_user 
Mind helping me?

anonymous_user · Answer

I'm not sure how to do this.

anonymous · Answer

Alright well at least you tried I'll keep asking around

anonymous · Answer

Mind helping me out with this one?
@myininaya

anonymous · Answer

Can you help me? @curlette123

anonymous · Answer

Help plz? @ZoMbAsH