Exponential Functions practice

Classify the model as Exponential GROWTH or DECAY.
A=1200(.85)⁶

• Growth
• Decay

Classify the model as Exponential GROWTH or DECAY.
A=10(1.01)³

• Growth
• Decay

James' 70 in. giant peach doubles in size every week. Write an equation that would represent how big the peach is after 5 weeks.

• y = 70(2)³⁵

• y = 70(2)⁵

• y = 2(70)⁵

• y = 5(70)²

Write an equation that models the following situation:

Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

• y = 6(0.14)^x

• y = 6(1+14)^x

• y = 6(1.14)^x

• y = 6(0.86)^x

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y = 5000(0.7)^x

• y = 30(5000)^x

• y = 5000(1.3)^x

• y = 5000(0.3)^x

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x
• y = 15(1.35)^x
• y = 15(0.35)^x
• y = 35(1.15)^x

What is the asymptote of this function?

• y = 0

• y = 5

• y = 2

• y = 1

Pick the equation that is exponential decay

• y = 2000(0.88)^x

• y = 0.5(1.88)^x

• y = 10(3/2)^x

• y = 0.8(13)^x

• Initial amount of bacteria is 5000

  It is increasing by 13%

• Initial amount of bacteria is 5000

  It is decreasing by 13%

• Initial amount of bacteria is 113

  It is increasing by 50%

• Initial amount of bacteria is 113

  It is decreasing by 50%

• There were initially 250 mosquitoes

  They are increasing by 4%

• There were initially 250 mosquitoes

  They are increasing by 96%

• There were initially 250 mosquitoes

  They are decreasing by 4%

• There were initially 250 mosquitoes

  They are decreasing by 96%