Exponential Functions 4.1 Practice

The function given is an example of growth or decay?

 $y=2^x$  

The function given is an example of growth or decay?

 $y=3\cdot\left(\frac{1}{2}\right)^x$  

The function given is an example of growth or decay?

 $y=0.2\cdot\left(7\right)^x$  

The function given is an example of growth or decay?

 $y=\left(1-0.2\right)^x$  

The function given is an example of growth or decay?

 $y=100\cdot\left(1+.72\right)^x$  

Which is the exponential function that can be written from this recursive formula?
 $u_0=120$  

 $u_n=0.8u_{n-1}$  

Which is the exponential function that can be written from this recursive formula?
 $u_0=5$  

 $u_n=13\cdot u_{n-1}$  

Which is the exponential function that can be written from this recursive formula?
 $u_0=5000$  

 $u_n=\left(1+0.2\right)\cdot u_{n-1}$  

Given the exponential function below, what is the zero term? 
 $y=2\cdot0.7^x$  

Karen bought a car for $24,000. The value of the car depreciates by about 13% each year. Which function below can be used to find the VALUE of her car?