# calculus

posted by
**Connor** on
.

The half-life of Radium-223 is 11.43 days. If a sample has a mass

of 900 mg, find the mass (in mg) that remains after

5 days

posted by
**Connor** on
.

The half-life of Radium-223 is 11.43 days. If a sample has a mass

of 900 mg, find the mass (in mg) that remains after

5 days