Unit 9 Quiz Review

How do you convert the Percentage change into a decimal?

• Divide by 5

• Move the decimal 2 places to the left

• Move the decimal 2 places to the right

• Make the number look better

This is an example of: $f\left(x\right)=\ 25\ \left(\ 0.20\right)^x$  

• Linear Growth

• Linear Decay

• Exponential Growth

• Exponential Decay

How do you know that this was exponential decay? $f\left(x\right)=\ 25\ \left(\ 0.20\right)^x$  

• Because the 25 was bigger than one

• Because the 0.20 was bigger than one

• Because the 25 was less than one

• Because the 0.20 was less than one

This is an example of: $f\left(x\right)=\ 0.25\ \left(\ 1.3\right)^x$  

• Linear Growth

• Linear Decay

• Exponential Growth

• Exponential Decay

How do you know that this was exponential growth? $f\left(x\right)=0\ .25\ \left(\ 1.3\right)^x$  

• Because the 0.25 was bigger than one

• Because the 1.3 was bigger than one

• Because the 0.25 was less than one

• Because the 1.3 was less than one

This is an example of: $f\left(x\right)=90\ \left(\ \frac{1}{2}\right)^x$  

• Linear Growth

• Linear Decay

• Exponential Growth

• Exponential Decay

How do you know that this was exponential decay? $f\left(x\right)=90\ \left(\ \frac{1}{2}\right)^x$  

• Because the 90 was bigger than one

• Because the 1/2 was bigger than one

• Because the 90 was less than one

• Because the 1/2 was less than one

This is an example of: $f\left(x\right)=3\ \left(\ \frac{5}{2}\right)^x$  

• Linear Growth

• Linear Decay

• Exponential Growth

• Exponential Decay

How do you know that this was exponential growth? $f\left(x\right)=3\ \left(\ \frac{5}{2}\right)^x$  

• Because the 3 was bigger than one

• Because the 5/2 was bigger than one

• Because the 3 was less than one

• Because the 5/2 was less than one

This function represents the number of ants in a colony $f\left(x\right)=3\ \left(\ 2\right)^x$ How many ants did you begin with? 

• There was 2 ants

• There was 3 ants

• The equation doesn't tell us