Exponential Functions Review

Which is the BEST estimate of the average rate of change for the function graphed, over the interval 1 ≤ x ≤ 3?

• 
  

• -2

• -3

• -4

• -6

Is the equation linear, exponential or neither?

• Linear
• Exponential
• Neither

What is the x-intercept of the exponential function? 

• (0,1)
• (0,0)
• There is not one

Is the pictured graph increasing, decreasing, or neither?

• Increasing

• Decreasing

• Neither

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

• SLOPE
• RATE OF CHANGE
• Y-INTERCEPT
• COMMON RATIO

Identify the y-intercept (initial value) of the function f(x)=2(4)^x.

• 2
• 4
• (2)^x
• 8

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

• 2
• 4
• (2)^x
• 8

What is the initial value of the situation represented by f(x)=0.05(2)^x?

• 0.05

• 2

• 0.1

• 1

Is the following function an example of decay or growth?

f(x) = 2(1.25)^x

• Exponential Growth

• Exponential Decay

Which function is exponential and decreasing?

• A
• B
• C
• D