Exponential Growth and Decay

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

• Exponential Growth

• Exponential Decay

• Linear

• None of the above

Is this exponential growth or decay?

• Growth

• Decay

Is this exponential growth or decay?

• Growth

• Decay

What is the pattern you see in this table?

• Common Ratio = 1/3

• Common Difference = 8

• Common Ratio = 3

• Common difference = 3

Kylee put $2000 into a savings account that earned interest compounded annually. The table shows the value at the end of the first five years. What is the value of the account after 12 years? (Hint: this is exponential. Write an equation and find f(12).) Round your answer to the nearest dollar.

Mathematical Equivalence

ON

Sarah put $1000 into a savings account that earned interest compounded annually. The table shows the value at the end of the first five years. What is the value of the account after 8 years? (Hint: this is exponential. Write an equation and find f(8).) Round your answer to the nearest dollar.

Mathematical Equivalence

ON

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

• Exponential Growth

• Exponential Decay

• Linear

• None

This is an example of.....

• exponential decay

• exponential growth

• constant change

• a linear function

Sarah put $1000 into a savings account that earned interest compounded annually. The table shows the value at the end of the first five years. What is the value of the account after 8 years? (Hint: this is exponential. Write an equation and find f(8).) Round your answer to the nearest dollar.

Mathematical Equivalence

ON

Emily is culturing bacteria that have a growth rate of 5% per hour. If the current population is 36,000 bacteria, how many bacteria will there be in 12 hours? If necessary, round your answer to the nearest whole number.

• 8,789,062 bacteria.

• 19,452 bacteria.

• 61,572 bacteria.

• 64,651 bacteria.