Exponential Growth and Decay

If the function is growing at a rate of 2.7% exponentially, the b or growth factor value is .

Which graph is an exponential function?

• red

• blue

• green

• none

Which of these functions is a growth function? Check all that apply.

• f(x)=7(1.2)^x

• f(x)=5(0.8)^x

• f(x)=0.5(3)^x

• f(x)=3(4/3)^x

What is a, the initial amount, for the function:

f(x)=300(1.16)^x

• 300

• 1.16

• .16

• x

The answer to a division equation is the ___________.

• divisor

• dividend

• quotient

• remainder

• The graph represents an exponential growth situation.
• Eventually, the car will be worth exactly $0.
• The starting value of the car was $12,000.
• The range for the situation is y ≥ 0.

Suppose you deposit $3000 in a savings account that pays interest at an annual rate of 4%. If no other money is added or withdrawn from the account, how much will be in the account after 10 years?

• $3122.18

• $4994.50

• $4440.73

• $86,776.40

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

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

• Growth
• Decay
• Linear
• None

Is the pictured graph growth, decay, or linear?  

• Exponential Growth
• Exponential Decay
• Linear
• None of the above