Cara tracked the population of fish in a pond. At the end of the first year, she counted 8 fish. Over the years, the population tripled each year. Which equation can be used to determine the number of fish, f, after t years? Af=3.8(t-1) f=3.8t CO f=8.3t Do f=8.3(t-1)

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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**Problem Statement:**

Cara tracked the population of fish in a pond. At the end of the first year, she counted 8 fish. Over the years, the population tripled each year.

**Question:**

Which equation can be used to determine the number of fish, \( f \), after \( t \) years?

**Options:**

A. \( f = 3 \cdot 8^{(t-1)} \)

B. \( f = 3 \cdot 8^t \)

C. \( f = 8 \cdot 3^t \)

D. \( f = 8 \cdot 3^{(t-1)} \) *(selected option)*

**Explanation:**

- The initial population of fish is 8.
- The population triples every year.

Since the population starts with 8 fish and triples each subsequent year, the correct equation to model this growth pattern is:

\[ f = 8 \cdot 3^{(t-1)} \]

This equation accounts for the initial count of 8 fish and multiplies by 3 raised to the power of \((t-1)\), representing the tripling effect after the first year.
Transcribed Image Text:**Problem Statement:** Cara tracked the population of fish in a pond. At the end of the first year, she counted 8 fish. Over the years, the population tripled each year. **Question:** Which equation can be used to determine the number of fish, \( f \), after \( t \) years? **Options:** A. \( f = 3 \cdot 8^{(t-1)} \) B. \( f = 3 \cdot 8^t \) C. \( f = 8 \cdot 3^t \) D. \( f = 8 \cdot 3^{(t-1)} \) *(selected option)* **Explanation:** - The initial population of fish is 8. - The population triples every year. Since the population starts with 8 fish and triples each subsequent year, the correct equation to model this growth pattern is: \[ f = 8 \cdot 3^{(t-1)} \] This equation accounts for the initial count of 8 fish and multiplies by 3 raised to the power of \((t-1)\), representing the tripling effect after the first year.
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