Exponential Function Review

• 112.4

• 0.31

• 31%

• 1.31

• Growth

• Decay

• Neither

• Both

• 112.4

• 31%

• 131%

• 69%

The value of a new car decreases exponentially at a rate of 5% per year. If the purchase price of the new car is $32,000, write an equation to represent the value of the car x years after it is purchased.

Is this a growth or decay?

• Growth

• Decay

• Neither

• I don't know

What is the domain and range of the graph?

• When the observation began, there were 2 bacteria colonies and the number of bacteria colonies increased by a factor of 3 for every time interval, t.

• When the observation began, there were 3 bacteria colonies and the number of bacteria colonies increased by a factor of 2 for every time interval, t.

• The final number of bacterial colonies is found by multiplying the 2 original colonies by 3.

• After 3 minutes, there are 2 bacteria colonies

Jeffery is a spelunker. He explores caves. Jeffery has been collecting data on the growth of stalactites over a period of years, as shown in the table. What would be the length of the stalactite after 10 years.

Mathematical Equivalence

ON

• 5

• 2

• 10

• 1

The revenue brought in by a newly released action film each weekend can be modeled by the function f(x) = 100,000,000(0.6)^x, where f(x) represents the revenue x weekends after the opening weekend in theaters.

 

Which statement about the function is true?

• The film’s revenue increased by $100,000,000 each weekend after the opening weekend

• The film had an opening weekend revenue of $100,000,000, and each weekend after the opening weekend, the revenue increased by 60% from the previous weekend.

• The film’s revenue decreased by $100,000,000 each weekend after the opening weekend.

• The film had an opening weekend revenue of $100,000,000, and each weekend after the opening weekend, the revenue decreased by 40% of the previous weekend.