The bacteria Streptococcus pneumoniae (S. pneumoniae) is the cause of many human diseases, the most common being pneumonia. A culture of these bacteria initially has 10 bacteria and increases at a rate of 25% per hour. (a) Find the hourly growth factor a. a = Find an exponential model f(t) = Cat for the bacteria count in the sample, where t is measured in hours. f(t) = (b) Use the model you found to predict the number of bacteria in the sample after 4 hours. (Round your answer to the nearest whole number.) bacteria Laurence Gough/Shutterstock.com 2009
The bacteria Streptococcus pneumoniae (S. pneumoniae) is the cause of many human diseases, the most common being pneumonia. A culture of these bacteria initially has 10 bacteria and increases at a rate of 25% per hour. (a) Find the hourly growth factor a. a = Find an exponential model f(t) = Cat for the bacteria count in the sample, where t is measured in hours. f(t) = (b) Use the model you found to predict the number of bacteria in the sample after 4 hours. (Round your answer to the nearest whole number.) bacteria Laurence Gough/Shutterstock.com 2009
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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![**Bacterial Growth of Streptococcus pneumoniae**
The bacteria *Streptococcus pneumoniae* (*S. pneumoniae*) is the cause of many human diseases, the most common being pneumonia. A culture of these bacteria initially has 10 bacteria and increases at a rate of 25% per hour.
---
**Tasks:**
**(a) Calculate the Hourly Growth Factor:**
Determine the growth factor per hour.
\[ a = \_\_\_ \]
**Exponential Model for Bacteria Count:**
Develop an exponential model \( f(t) = Ca^t \) for the bacteria count in the sample, where \( t \) is measured in hours.
\[ f(t) = \_\_\_ \]
**(b) Predict Bacteria Count After 4 Hours:**
Using the model found, estimate the number of bacteria in the sample after 4 hours. (Round your answer to the nearest whole number.)
\[ \_\_\_ \text{ bacteria} \]
*Image Description:* A scientist, in a lab setting, appears to be handling a laboratory apparatus, possibly related to the study or cultivation of bacterial samples.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc20ba261-3077-4da5-9466-d35d0dacb76b%2F634521da-f7cb-4d8d-9807-451c53761111%2Fym9iii_processed.png&w=3840&q=75)
Transcribed Image Text:**Bacterial Growth of Streptococcus pneumoniae**
The bacteria *Streptococcus pneumoniae* (*S. pneumoniae*) is the cause of many human diseases, the most common being pneumonia. A culture of these bacteria initially has 10 bacteria and increases at a rate of 25% per hour.
---
**Tasks:**
**(a) Calculate the Hourly Growth Factor:**
Determine the growth factor per hour.
\[ a = \_\_\_ \]
**Exponential Model for Bacteria Count:**
Develop an exponential model \( f(t) = Ca^t \) for the bacteria count in the sample, where \( t \) is measured in hours.
\[ f(t) = \_\_\_ \]
**(b) Predict Bacteria Count After 4 Hours:**
Using the model found, estimate the number of bacteria in the sample after 4 hours. (Round your answer to the nearest whole number.)
\[ \_\_\_ \text{ bacteria} \]
*Image Description:* A scientist, in a lab setting, appears to be handling a laboratory apparatus, possibly related to the study or cultivation of bacterial samples.
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