Data Exponential Functions

Describe the equation
y = 100 * 2^x

• It starts with 100 and is tripling

• It starts with 100 and is doubling

• It starts with 2 and is being multiplied by 100 each time

• It starts with 100 and is adding 2 each time

Write an equations that models the data shown.

Suppose the population of a species of insects doubles every year. There are 1600 insects initially. The function for the scenario would be?

Linear, exponential, or neither?
Amount increases $10 per year

• Linear

• Exponential

• Neither

• All of the above

Is the pictured graph increasing, decreasing, or neither?

• Increasing

• Decreasing

• Neither

True or False: This is an exponential function.

• True

• False

Which function models this table?

Identify the common ratio (multiplier) of the function f(x)=2(4)^x.

• 2

• 4

• (2)^x

• 8

What is the x-intercept of the exponential function? 

• (0,1)

• (0,0)

• There is not one

In an exponential function, what does the 'a' represent?

• Input

• Rate of change

• Y-intercept/Initial value

• Output