Posted by **Anonymous** on Friday, April 26, 2013 at 11:11pm.

Andrew measures they amount of a very unstable substance to be 100 moles. the half life of this substance is 3 days(after 3 days, half is gone).

write an exponential function that models this situation where Y is the amount of substance and X is time in days.

use your equation for problem 28 to complete the chart.

- algebra -
**Reiny**, Friday, April 26, 2013 at 11:15pm
amount = 100 (1/2)^(t/3) , where t is in days

No idea what problem 28 is, so .....

- algebra -
**Anonymous**, Wednesday, May 15, 2013 at 3:12pm
0=100

3=50

6=25

9=12.5

12=6.25

## Answer This Question

## Related Questions

- Algebra - Andrew measures the amount of a very unstable substance to be 100 ...
- Math - I need help in algebra 1. I have 4 questions, I already answered 3 of ...
- Math/Calculus - After 5 days, a particular radioactive substance decays to 37% ...
- Science - Radioactive substance decays so that after t years, the amount ...
- Exponential Modeling - The half-life of a radioactive substance is one day, ...
- Algebra 2 help... - A half life of a certain radioactive is 36 days. An initial ...
- Calculus - a certain radioactive substance is decaying so that at time t, ...
- calculus - assume the half-life of the substance is 31 days and the initial ...
- Physics - Suppose a hypothetical radioactive nucleus (Hy) has a half-life of 10 ...
- Physical Science- Help Please! - Suppose that you are given a 100 gram sample of...

More Related Questions