Exponential Decay Practice

Which of the following is an example of exponential decay?

Which graph represents exponential decay?

What is the domain of the exponential function?  $f\left(x\right)\ =\ \left(\frac{1}{2}\right)^x\ +\ 2$  

What is the range of the exponential function?  $f\left(x\right)\ =\ \left(\frac{1}{2}\right)^{x-1\ }+\ 2$  

What is the Horizontal Asymptote of the Exponential Function?  $f\left(x\right)\ =\ \left(\frac{1}{2}\right)^x\ +\ 2$  

What is the shift of this function from its parent function?
 $f\left(x\right)\ =\ \left(\frac{1}{3}\right)^x\ -\ 3$  

What is the shift of this function from its parent function?
$$f\left(x\right)={\left(\frac{1}{2}\right)}^{x-1}+2$$  

What is the shift of this function from its parent function?
 $\ f(x)=\left(\frac{3}{5}\right)^{x−5}$