Match Exponential Equations

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

• Exponential Growth

• Linear

• Exponential Decay

• None of the Above

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?  

• Growth
• Decay
• Linear
• None

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

• Growth
• Decay
• Linear
• None

What is the y-intercept of the function?

• 2
• 3
• 1
• -2

What is the asymptote of the graph?

• x=2

• y=-2

• y=0

• y=-1

Asymptote?

• y = 4
• y = 0
• x = 4
• y = 5

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

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

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=5000x^x