Unit 5 Review - Exponential Functions

Is the table linear or exponential?

• Linear

• Exponential

The values in the table follow either a linear pattern or an exponential pattern. What is the missing y -value?

• 36

• 6

• 24

• 54

Which of the following is the graph of  $y=\frac{2}{3}x+5$  

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Which of the following is the graph of  $y=12\left(\frac{1}{4}\right)^x$  

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What type of function describes the story below?
You have $10 and earn $5 every week. 

• Linear
• Exponential
• Neither

Classify the model as Exponential GROWTH or DECAY.
A=10(1.01)³

• Growth
• Decay

Identify each function as representing exponential growth or decay.
f(x) = 4(0.89)^x

• growth
• decay

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y=5000(0.7)^x
• y=30(5000)^x
• y=5000(1.3)^x
• y=5000x^x

Which function represents the table of values? 

• f(x) = 4x
• f(x) = x³
• f(x) = 4^x
• f(x) = 4^x-1

What is the common ratio for the sequence:
28, 14, 7, 3.5...

• 2
• 1/2
• -14
• -7