Exponential Functions Algebra 2

Water Hyacinth is an invasive species is spreading over the surface of a lake. The figure shows the surface area covered by the water hyacinth over a 3-week period.

Select the best description for this pattern.

• This is an exponential pattern with a slope of 200

• This is an exponential pattern with a multiplier of 1.4

• This is a linear pattern with a slope of 200

• This is a linear pattern with a mu;ltiplier of 1.4

What type of function is y = 7(5/4)^x?

• Exponential Growth

• Exponential Decay

• Linear

• None of the above

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

• Exponential Growth

• Exponential Decay

• Linear

• None

What is the domain of the function shown?

• All real numbers

• All real numbers greater than 1

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

• Exponential Growth

• Linear

• Exponential Decay

• None of the Abovee

What is the y-intercept of the function?

• 2

• 3

• 1

• -2

A new savings account is opened with $400 and increases by 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

What is the x-intercept of the exponential function? 

• (0,1)

• (0,0)

• There is not one

What does the y-intercept of the graph represent?

• The amount of grams the material is gaining.

• The amount of grams the material is losing.

• The amount of grams remaining after so many years.

• The initial amount of grams.