Key Features of an Exponential Function

A new savings account is opened with $400 and gains 3% every year. What is the exponential function?

• f(x)=400(1+3)^x

• f(x)=400(1-0.03)^x

• f(x)=400(1+0.03)^x

• f(x)=400(0.03)^x

Is the pictured graph growth, decay, or linear or none?  

• Growth

• Decay

• Linear

• None

Identify the growth factor (b-value) of the function f(x)=2(4)^x.

• 2

• 4

• (2)^x

• 8

Which equation best represents the graph above?

• f(x)=5(.5)^x

• f(x)=5(.25)^x

• f(x)=10(5)^x

• f(x)=10(.75)^x

Describe the transformation of y = 2^x - 3

• left 3

• down 3

• up 3

• right 3

Is the function increasing, decreasing, neither, or both?

• increasing

• decreasing

• neither

• both

Is the pictured graph growth, decay, or linear or none?  

• Exponential Growth

• Exponential Decay

• Linear

• None

What type of function is f(x)=2(1/7)^x ?

• Exponential Growth

• Linear

• Exponential Decay

• None of the Abovee

What is the range of y=2^x?

• x>0

• x=all real numbers

• y>0

• y=all real numbers

What is the end behavior?

• As x approaches infinity, f(x) approaches infinity.

  As x approaches negative infinity, f(x) approaches infinity

• As x approaches infinity, f(x) approaches 0.

  As x approaches negative infinity, f(x) approaches infinity

• As x approaches infinity, f(x) approaches negative infinity.

  As x approaches negative infinity, f(x) approaches infinity

• As x approaches 0, f(x) approaches infinity.

  As x approaches negative infinity, f(x) approaches infinity