Growth Decay Equation

Which of the following models represents exponential decay?

• y = 5(1 + .05)^t

• y = 5(1 - .05)^t

• y = .8(1 + .05)^t

• y = -2(1 + .05)^t

Classify the model as Exponential GROWTH or DECAY.
A=10(1.01)³

• Growth

• Decay

Does this function represent exponential growth or decay?

• Growth

• Decay

What type of function is y = 7(1.25)^x?

• Exponential Growth

• Exponential Decay

• Linear

• None of the above

Is this exponential growth or decay?

• Growth

• Decay

• Neither

Is this exponential growth or decay?

• Growth

• Decay

• Neither

Is this exponential growth or decay?

• Growth

• Decay

• Neither

Is this exponential growth or decay?

• Growth

• Decay

• Neither

Determine if the equation y = 15(1.35)^x represents exponential growth or decay and justify. Hint: Think about the growth and decay equations.

• Growth, because the scale factor is greater than 1

• Growth, because the scale factor is less than 1

• Decay, because the scale factor is greater than 1

• Decay, because the scale factor is less than 1

What is the a-value (or y-intercept) for the function: f(x) = 800(0.85)^x?

• 800

• 0.85

• 0.15

• x