Exponential Functions (percent growth or decay)

y= 50(1.07)^x

What is the initial amount?

• 50

• 1.07

• 107

• 7

y= 50(1.07)^x

Is this growth or decay?

• growth

• decay

• neither

y= 50(1.07)^x

What is the percent growth?

• 50%

• 1.07%

• 107%

• 7%

y = 1000(0.65)^x

What is the initial amount?

• 1000

• 0.65

• 165

• 65

y = 1000(0.65)^x

Is this growth or decay?

• growth

• decay

• neither

y = 1000(0.65)^x

What is the percent decay?

• 1000

• 35

• 165

• 65

y = 0.5 (1.081)^x

^{What is the initial amount}

• 1.081

• 108.1

• 8.1

• 0.5

y = 0.5 (1.081)^x

^{Is this growth or decay}

• growth

• decay

• neither

y = 0.5 (1.081)^x

^{What percent did it grow?}

• 0.5

• 1.081

• 108.1

• 8.1

• 81

y = 5000(0.32)^x

^{What is the decay rate?}

• 32%

• 132%

• 68%

• 0.32