Learn Before
Example 10.44: Solving an Exponential Growth Application
To determine the future size of a population that grows exponentially, first find the growth rate and then use it to calculate the final amount. For example, if a bacteria population grows from to in hours, use the exponential growth formula . Substitute the known values to get . Dividing by gives . Taking the natural logarithm of both sides results in , which simplifies to . To find the population after hours, substitute this rate back into the formula: . Evaluating this expression yields . Thus, the population will be approximately bacteria.
0
1
Tags
OpenStax
Intermediate Algebra @ OpenStax
Ch.10 Exponential and Logarithmic Functions - Intermediate Algebra @ OpenStax
Algebra
Related
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
Learn After
Try It 10.87: Evaluating an Exponential Growth Model
Try It 10.88: Evaluating an Exponential Decay Model
As a data analyst forecasting the exponential growth of your company's new software platform, you need to project the future number of active users. Recall the standard procedure for solving an exponential growth application and arrange the following mathematical steps in the correct order.
A logistics company is monitoring the growth of its delivery fleet. The number of vehicles is growing exponentially following the formula , where is the final amount, is the initial amount, is the growth rate, and is the time in years. If the company started with 50 vehicles and now has 150 vehicles after 3 years, which equation is correctly set up to solve for the growth rate ?
As a cloud infrastructure analyst, you use the exponential growth formula to project future data storage requirements for your organization. Match each mathematical component of the formula with its corresponding role in this capacity planning scenario.
In a professional growth analysis using the exponential model , if the growth rate constant is unknown, it is necessary to first calculate the value of using current data before you can determine the projected future amount .
Procedural Steps in Exponential Growth Forecasting