Which exponential functions represent exponential decay?

Select all that apply.

f(x)=0.25(1.5)3x

f(x)=(0.85)x

f(x)=(1.01)x

f(x)=1.8(0.6)x

f(x)=(0.95)2x-*

The function representing exponential decay are:

b)  

d)  

e)

Step-by-step explanation:

The exponential function is given as:

where , , and .

If and then the function represents exponential decay.

If   and then the function represents exponential growth.

Thus, we can check each function given.

a)

For the given function and . So, it represents exponential growth.

b)  

For the given function and . So, it represents exponential decay.

c)  

For the given function and . So, it represents exponential growth.

d)  

For the given function and . . So, it represents exponential decay.

e)

For the given function and . . So, it represents exponential decay.