Exponential Functions Evaluate

A new car costs $15,000 to build in 2010. The company’s financial analysts expect costs to rise by 6% per year for the 10 years they are planning to build the car. The cost to build the car can be modeled by the function f (t) = 15,000 (1.06)^t , where t is the number of years after 2010. How much will it cost the company to build the car in 2017?

• $22,554.45

• $23,907.72

• $19,678.32

• $45,678.91

Linear, exponential, or neither?

y = 4(3)^x

• Linear

• Exponential

• Neither

• 27

• 9

• 6

• 12

A population of amoebas in a petri dish will triple in size every 20 minutes. At the start of an experiment the population is 800. Write a function to model this relationship with y representing the total population, and x as the number of 20 minute periods.

Linear, exponential, or neither?

Amount triples each year

• Linear

• Exponential

• Neither

Linear, exponential, or neither?

• Linear

• Exponential

• Neither

Linear, Exponential, or Neither?

There are 800 students at Western Middle. The population increases by 3% each year.

• Linear

• Exponential

• Neither

Write a function to represent:

A petri dish contains 35 bacteria. The bacteria triple every hour.

A petri dish contains 35 bacteria. The bacteria triple every hour. How many bacteria are present after 4 hours?

•  2835 bacteria

• 945 bacteria 

•  1563 bacteria

• 3685 bacteria 

Does the graph represent growth, decay, linear or none?

• Exponential Growth

• Exponential Decay

• Linear

• None