"Suppose a radioactive substance decays at a rate of 3.5% per hour. What percent of the substnce is left after 6 hours?"
Can you please list what I would have to do to solve this problem?
Hello, EJdive43!
A radioactive substance decays at a rate of 3.5% per hour.
What percent of the substance is left after 6 hours?
First, set up the function.
The substance loses 3.5% every hour.
That is, 96.5% of the substance remains.
We have: . . where
When , we have: .
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
Therefore: .