Percent Growth or Decay

What is the initial amount?

• 50

• 1.07

• 107

• 7

y= 50(1.07)^x

Is this growth or decay?

• growth

• decay

• neither

What is the percent growth?

• 50%

• 1.07%

• 107%

• 7%

What is the initial amount?

• 1000

• 0.65

• 165

• 65

The bear population in a given area is currently 1580. They anticipate the bear population to decrease by 2% each year. Which function represents the population of bears, B, after t years.

• B = 1580(0.02)^t

• B = 1580(1 – 0.02)^t

• B = 1580(1 + 0.02)^t

• B = 1580(1 – 0.2)^t

The bear population in a given area is currently 1580. They anticipate the bear population to decrease by 2% each year. Which function represents the population of bears, B, after t years.

• B = 1580(0.02)

• B = 1580(1 – 0.02)

• B = 1580(1 + 0.02)

• B = 1580(1 – 0.2)

What is the percent growth or decay of the following function?

What is the percent growth or decay of the following function?

A used car was purchased for $8,400. The car depreciates at a rate of 5% each month. The starting value is ​ (a)   and there is ​ 5% ​ (b)   which means the scale factor is ​ (c)   .

• $8,400

• decay

• 0.95

• growth

• 0.05

Which of the following could be represented by A=200(1.1)^t

• I started with $200 and lost 1% per week

• I started with $200 and lost 10% per week

• I started with $200 and gained 1% per week

• I started with $200 and gained 10% per week