Growth / Decay Functions

When will a multiplier be a decay factor?

• When the number is greater than 1

• When the number is greater than or equal to 1

• When the number is less than 1

• When the number is less than or equal to 1

• When the number is equal to 1

P = 8(1.23)^t

Is the function growth or decay?

Check the box:

• Growth

• Decay

Select all the equations that represent exponential decay.

Does the function represent a growth or decay function?

• Exponential GROWTH

• Exponential DECAY

There is a culture of bacteria that begins with 5000 cells and dies by 30% each year. Write an exponential model to represent the situation.

• y = 5000(0.70)^x

• y = 30(5000)^x

• y = 5000(1.30)^x

• y = 5000x^x

The population of mosquitoes at the beginning of the summer is 4000. The population grows at a rate of 25% a month. How many will there be after 4 months?

• 9766

• 9006

• 9765

• 5433

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

• Exponential GROWTH

• Exponential DECAY

• Linear

• Not a function

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

• Exponential Growth

• Exponential Decay

• Linear

• None

Is this exponential growth or decay?

• Growth

• Decay

• Linear

• Not a function

In an exponential function, what does the b value represent?

• Rate of growth or decay

• Growth or Decay factor

• Initial value

• Exponent