Question

Which function below represents exponential decay?

ƒ(x) = 0.5(2)x
ƒ(x) = 4(0.25)x
ƒ(x) = 2(1.3)x
ƒ(x) = (-3)x

Answer 1

Don't listen to this guy, the answer is actually f(x)=4(0.25)^x

I got this answer (f(x)=(-3)^x) wrong on my assignment already

Answer 2

f(x)=(-3)x

Explanation: