Exponential Growth and Decay

The table has an initial value of ​ (a)   and demonstrates exponential ​ (b)   at a factor of​ (c)   .

• 2

• growth

• 5

• -1

• decay

Is this a growth or decay problem?

​ (a)  

• Growth

• Decay

The amount of bacteria is ​ (a)   at a rate of ​ (b)   each day.

• increasing

• 12%

• decreasing

• 88%

Is this exponential growth or decay?

• Growth because a=1

• Decay because b=0.5

• Growth because there is no a

• Neither because a=0

A newly launched clothing line is rapidly increasing in popularity. Each month, 20% more clothing items are sold. If 89,090 items were sold this month, how many will be sold in 9 months? If necessary, round your answer to the nearest whole number.

• 74,278 items.

• 11,957 items.

• 319,226 items.

• 459,685 items.

The population of a school is 2200 and is increasing at a rate of 2% each year. Find the population after 6 years.

Move each part of the equation into the table next to the term that best describes what it represents. Not all parts of the equation will be used.

• (1+0.04)

• time

• 0.04

• interest rate

• t

• growth factor

• 3,000

• Initial deposit

Is the population growing or decreasing, and by how much?

• growing by 4.5%

• decreasing by 4.5%

• growing by 95.5%

• decreasing by .955

• Linear Growth

• Linear Decay

• Exponential Growth

• Exponential Decay

• Because the 0.25 was bigger than one

• Because the 1.3 was bigger than one

• Because the 0.25 was less than one

• Because the 1.3 was less than one