The following equation calculates the number of years y it takes for x percent of the robin population to die. See attached Estimate analytically the percentage of robins that died after 4 years. Do not round until final answer, then round to 4 decimal spaces if needed.

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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The following equation calculates the number of years y it takes for x percent of the robin population to die. See attached Estimate analytically the percentage of robins that died after 4 years. Do not round until final answer, then round to 4 decimal spaces if needed.
### Title: Understanding Logarithmic Equations

#### Subject: Robins

The equation provided is:

\[
y = \frac{3 - \log(100-x)}{0.42}
\]

**Explanation:**

- **Variable \(y\):** Represents the output or dependent variable of the equation.
- **Logarithm (\(\log\)):** The function \(\log(100-x)\) is the logarithm of the expression \(100-x\). Logarithms are the inverse operation of exponentiation and are essential in scenarios where the rate of change of a quantity is dependent on its current value.
- **Expression \(100-x\):** This is the argument of the logarithmic function. The variable \(x\) should be less than 100 for this log function to be defined under real numbers.
- **Multiplier 3:** It appears as a constant in the expression \(3 - \log(100-x)\), adjusting the scale or shift of the logarithmic output.
- **Divisor \(0.42\):** This constant term divides the entire expression, scaling the output value \(y\).

**Applications:**

Logarithmic equations like this one are useful in various fields such as biology, economics, and physics, where they model processes or behaviors like growth rates, decay, and intensities.

**Note:** 
Care should be taken when defining the domain of this function. Since it's logarithmic, the input expression \(100-x\) must be greater than zero. Thus, \(x\) should be less than 100 for the function to remain within the domain of real numbers.
Transcribed Image Text:### Title: Understanding Logarithmic Equations #### Subject: Robins The equation provided is: \[ y = \frac{3 - \log(100-x)}{0.42} \] **Explanation:** - **Variable \(y\):** Represents the output or dependent variable of the equation. - **Logarithm (\(\log\)):** The function \(\log(100-x)\) is the logarithm of the expression \(100-x\). Logarithms are the inverse operation of exponentiation and are essential in scenarios where the rate of change of a quantity is dependent on its current value. - **Expression \(100-x\):** This is the argument of the logarithmic function. The variable \(x\) should be less than 100 for this log function to be defined under real numbers. - **Multiplier 3:** It appears as a constant in the expression \(3 - \log(100-x)\), adjusting the scale or shift of the logarithmic output. - **Divisor \(0.42\):** This constant term divides the entire expression, scaling the output value \(y\). **Applications:** Logarithmic equations like this one are useful in various fields such as biology, economics, and physics, where they model processes or behaviors like growth rates, decay, and intensities. **Note:** Care should be taken when defining the domain of this function. Since it's logarithmic, the input expression \(100-x\) must be greater than zero. Thus, \(x\) should be less than 100 for the function to remain within the domain of real numbers.
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