Answer: B. exponential decay
Step-by-step explanation:
From the given table, we can observe that y is decreasing as x is increasing.
So it must be a decay function.
Also it can not models a linear relationship, since the rate of change is not constant throughout the table.
then it must be exponential decay function.
An exponential decay is represented by
[tex]y=A(1-r)^x[/tex]. where x is the time period, A is the initial amount and r is the rate of decay
