Exponential Growth Time

The population of a bacteria is doubling every 3 minutes. If there are 50 bacteria now, how many will there be in 7 minutes?

• Approximately 152 bacteria

• Approximately 352 bacteria

• Approximately 252 bacteria

• Approximately 452 bacteria

This function has a pattern of multiplying or dividing the same number from one y-value to the next y-value as the x-value increases by one. 

• Linear

• Exponential

• Neither

This function does not change by the same rate.

• Linear

• Exponential

• Neither

The graph of this function is a curve going up really fast or down really fast. 

• Linear 

• Exponential

• Neither

What type of function is this equation:
y=  4^x+1

• Linear

• Exponential

• Neither

What type of function describes the story below?
You have $5 and triple your money every day. 

• Linear

• Exponential

• Neither

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

• Exponential Growth

• Exponential Decay

• Linear

• None

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

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

The number of mosquitoes at the beginning of the summer was 4,000. The population of mosquitoes is expected to grow at a rate of 25% a month. How many mosquitoes will there be after 4 months?

• 9766

• 9006

• 9765

• 5433