Hello, This is my classmate's post. I just turned 21 on March 3, I was born in 1996. 28 days in March and 12 days in April, so I am officially, 21...

Hello,

This is my classmate's post.

I just turned 21 on March 3, I was born in 1996.

28 days in March and 12 days in April, so I am officially, 21 years old and 40 days old.

21 + 40/365 = 21.110 years old!

The amount of radioactive substance left in me is:

Y= 100 / (21.110² + 1)

Y= 100 / (445.6321 +1)

Y= 100 / (446.6321)

Y= 4.466321

Y= 4.466cc

So, after 21.110 years, I have 4.466cc of radioactive substance in my body.

Here is mine. I want to know how to do my calculations

I am 49 years old. I was born in Oct 13, 1967

Thank you