Exponential Word Problems Find the Decay or Growth

Given the function f(x) = 1.07^x, how do you know the exponential function shows growth or decay?

• Growth or decay is determined by the value of the base

• Growth or decay is determined by the value of the exponent

• Because exponential functions are always growth functions

• Because exponential functions are always decay functions

Given the function f(x) = 1.07^x, is this a growth or decay function?

• Growth

• Decay

Given the function f(x) = 0.92^x, is this a growth or decay function?

• Growth

• Decay

Given the function f(x) = 1.00005^x, is this a growth or decay function?

• Growth

• Decay

Given the function f(x) = 0.0000000435^x, is this a growth or decay function?

• Growth

• Decay

Given the function f(x) = 1.07^x, what was the rate of decay?

• .07%

• .7%

• 7%

• 70%

Given the function f(x) = 2(1.0045)²⁵ⁿ, what was the rate of decay?

• .045%

• .45%

• 4.5%

• .0045%

Given the function f(x) = 1.00005^x, what is the rate of change?

• .0005%

• .005%

• .05%

• .5%

Given the function f(x) = 0.92^x, what is the rate of change?

• .92%

• 9.2%

• .08%

• 8%

Given f(x) = (1.09)⁴⁵ and the rate of change is 9% every minute, how much time has passed?

• 9 minutes

• 5 minutes

• 45 minutes

• 9 times 45 minutes