review for unit 8 test

Is the pictured graph exponential growth, exponential decay, or linear or none?

• Exponential Growth

• Exponential Decay

• Linear

• None

Does the table represent a linear function, exponential function, or neither?ar

• Linear

• Exponential

• Neither

Does the table represent a linear function, exponential function, or neither?ar

• Linear

• Exponential

• Neither

• A.
• B.
• C.
• D.

• A.
• B.
• C.
• D.

• A.
• B.
• C.
• D.

• A.
• B.
• C.
• D.

• A.
• B.
• C.
• D.

What is the equation that best represents the graph?

• y=2^y
• y=2^x
• y=2^-x
• y=x²

A particular radioactive element has a half life of 25 years. For an initial mass of 10 grams, the mass y in grams after t years is given by
y=10(1/2)^t/25 where t>0
How much does the mass remains after 120 years?

• .682
• .25
• .5
• .359