Step 1
The base of the function
Step 2
For the following exercises, determine whether the equation represents exponential growth, exponential decay, or neither. Explain.
Tell whether the function represents exponential growth or exponential decay. Then graph the function.
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
.
Determine whether the function represents exponential growth or exponential decay. Identify the percent rate of change.