Exponential and Logarithm Review

Classify the model as Exponential GROWTH or DECAY.
A=1200(.85)⁶

• Growth

• Decay

Florine-21 has a half-life of 4 seconds. You begin with a 50 mg sample of Florine-21. Which exponential equation would represent the amount of Florine-21after t seconds.

log (x - 1)  - log (x - 2)  = log 5

• 7

• 4/9

• 9/4

• 1/7

What does the y-intercept of the graph represent?

• The amount of grams the material is gaining.

• The amount of grams the material is losing.

• The amount of grams remaining after so many years.

• The initial amount of grams.

Which equation is represented by the table?

• y = 40(2)^x

• y = 40(1/2)^x

• y = 40 - 2x

• y = 40 - 1/2x

Evaluate. 

• A

• B

• C

• D

Evaluate

• A

• B

• C

• D

Evaluate

• A

• B

• C

• D

Logarithmic functions are the inverse of...

• Linear Functions

• Exponential Functions 

• Quadratic Functions 

• Polynomial Functions 

Use the change of base formula and your calculator to approximate the log.

• A

• B

• C

• D