Differentiate Between Exponential Growth & Decay

How can you determine from an exponential equation if it models exponential decay?

• The equation will have an a value that is greater than 1

• The equation will have a b value that is greater than 1

• The equation will have a b value that is less than 1

• The equation will have an a value that is less than 1

Does this table represent exponential growth or decay?

• growth

• decay

Does the graph show exponential growth or decay?

• growth

• decay

Does the table show exponential growth or decay?

• growth

• decay

 $y=400\left(1.05\right)^x$  
Does the equation above model exponential growth or decay?

• growth

• decay

Does the table show exponential growth or decay?

• growth

• decay

 $y=35\left(0.60\right)^x$  
Does the equation above model exponential growth or decay?

• growth

• decay

 $y=90\left(\frac{3}{4}\right)^x$  
Does the equation above model exponential growth or decay?

• growth

• decay

 $y=1\left(2\right)^x$  
Does the equation above model exponential growth or decay?

• growth

• decay

Maddy took 400mg of Advil at 3:00pm. Each hour, her body eliminates half of the medicine from her system.

Do you think this situation would be exponential growth or decay?

• growth

• decay