Growth or Decay Rates

What is a, the starting term, for the function: f(x) = 300(1.16)^x?

• 300

• 1.16

• .16

• x

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

• Exponential Growth

• Exponential Decay

• Linear

• None

Is this exponential growth or decay?

• Growth

• Decay

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

• Exponential Growth

• Exponential Decay

• Linear

• None of the above

A scientist is studying the growth rate of a certain bacteria when it is starved of nutrients. The graph represents the number of bacteria (y) over time (x).

Every minute the number of bacteria is decreasing by approximately what percent?​ ​ ​ ​ (a)  

After the first 30 minutes, how many bacteria died off?​ (b)  

After 50 minutes, there was a total of how many bacteria?​ (c)  

What is the initial amount of bacteria?​ (d)  

• 3

• 30,000

• 10,000

• 80,000

The equation shows the rate of growth of a population. What is the rate of growth?

• 1.035%

• 350%

• 35%

• 3.5%

The equation shows the rate of growth of a population. What is the rate of growth?

• 1.035%

• 350%

• 35%

• 3.5%

Determine if the function is increasing or decreasing. Then, tell the rate by which the function is increasing or decreasing by.

Select all that apply.

• Increasing

• Decreasing

Determine if the function is increasing or decreasing. Then, tell the rate by which the function is increasing or decreasing by.

Select all that apply.

• Increasing

• Decreasing

Which of the following exponential functions represents an initial value of 1780 and a growth of 18% for x years?​