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Try It 10.33: Evaluating Exponential Growth
Suppose a researcher starts an experiment with an initial population of bacteria () that grows continuously at a rate of % per hour (). To determine the number of bacteria after hours (), we use the exponential growth formula: . Substituting the given values into the equation yields , which simplifies to . Evaluating this expression gives an amount of approximately . Therefore, the researcher will find bacteria.
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Ch.10 Exponential and Logarithmic Functions - Intermediate Algebra @ OpenStax
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Example: Evaluating Exponential Growth
Try It 10.33: Evaluating Exponential Growth
Try It 10.34: Evaluating Exponential Growth
Example 10.44: Solving an Exponential Growth Application
Half-Life
A marketing manager uses the exponential growth and decay formula to forecast the number of subscribers for a new digital service. Match each variable from the formula with the specific role it plays in this business projection.
A logistics manager uses the formula to model the depreciation (loss of value) of a delivery truck over several years. To correctly show that the truck's value is decaying, which condition must be met by the constant ?
A laboratory supervisor uses the formula to model the decay of a chemical sample over time. In this formula, the variable represents the ____ amount of the chemical present at the beginning of the observation.
A facilities manager uses the formula to model the decay of a backup power supply's charge over time. True or False: This formula is used to model decay that occurs in fixed daily intervals rather than at a continuous rate.
Differentiating Growth and Decay in Professional Modeling
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A laboratory researcher is using the formula to model the continuous growth of a bacteria population. If the experiment begins with 50 bacteria and grows at a rate of 15% per hour (), which of the following expressions correctly shows the values substituted into the formula to find the population after 8 hours?
A quality control technician is monitoring a bacterial culture used in fermentation. The culture begins with an initial population of 50 and grows continuously at a rate of 15% per hour. When using the formula to find the population after 8 hours, the numerical value of the exponent (the product of the rate and time) simplifies to ____.
A laboratory researcher is monitoring a bacterial culture that begins with 50 bacteria and grows continuously at a rate of 15% per hour. Match each component of the exponential growth formula with the numerical value from the scenario that will be substituted into the formula to calculate the population after 8 hours.
A laboratory researcher is documenting the process of evaluating a bacterial culture's growth. The culture starts with 50 bacteria and grows continuously at a rate of 15% per hour. Arrange the following steps in the correct order to determine the population after 8 hours using the formula .
A laboratory researcher starts an experiment with an initial population of 50 bacteria () that grows continuously at a rate of 15% per hour (). True or False: After 8 hours (), the growth formula simplifies to , resulting in a population of approximately 166 bacteria.