Posted by **jessica** on Tuesday, March 6, 2012 at 11:03pm.

Radioactive substance decays so that after t years, the amount remaining, expressed as a percent of the original amount, is A(t)=100(1.6)^(-t).

a) Determine the function A’, which represent the rate of decay of the substance.

b) what is the half-life for this substance?

c) what is the rate of decay when half the substance has decayed?

## Answer this Question

## Related Questions

- calculus - The rate at which an amount of a radioactive substance decays is ...
- Math - A radioactive substance decays according to the formula Q(t) = Q0e−...
- Math - A radioactive substance decays according to the formula Q(t) = Q0e−...
- calculus - Carbon-14 is a radioactive substance produced in the Earth's ...
- Calc - A sample of a radioactive substance decayed to 93.5% of its original ...
- algebra - A radioactive substance decays according to the formula A=A0e^kt where...
- Maths - A radioactive substance decays exponentially in such a way that after 50...
- Math - D.E.Q. - The half-life of a radioactive isotope is the amount of time it ...
- Calculus-derivatives - Verify if these are correct answers. 1. The derivative of...
- calculus - A sample of a radioactive substance decayed to 94.5% of its original ...