Question

Which Function Represents Exponential Decay?

Answer 1

the last, since exponential function with base between 0 and 1

Answer 2

`f(x)= 2((2)/(3))^x`

Explanation:

Exponential equation is in the form of
`y=a(b)^x`

'a' represents the initial amount

'b' represents the growth or decay factor

when the value of b is between 0 and 1 then it is decay function

In the function
`f(x)= 2((2)/(3))^x`

the value of b is
`(2)/(3)` that is less than 1

So the function
`f(x)= 2((2)/(3))^x` represents a exponential decay.