Answer is given below (on video)
Determine whether each function is an example of exponential growth or decay. Then, find the y-intercept.
There was a sample of
300
milligrams of a radioactive substance to start a study. Since then, the sample has decayed by
2.3%
each year.
Let
t
be the number of years since the start of the study. Let
y
be the mass of the sample in milligrams.
Write an exponential function showing the relationship between
y
and
t
.
For the following exercises, determine whether the equation represents exponential growth, exponential decay, or neither. Explain.
Determine whether each function is an example of exponential growth or decay. Then find the y-intercept.