Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN: 9780134463216
Author: Robert F. Blitzer
Publisher: PEARSON
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### Problem Overview

In economics, functions that involve revenue, cost, and profit are used. For example, suppose that \( R(x) \) and \( C(x) \) denote the total revenue and the total cost, respectively, of producing a new grocery cart for a wholesaler. The difference \( P(x) = R(x) - C(x) \) represents the total profit for producing \( x \) carts. Given \( R(x) = 58x - 0.3x^2 \) and \( C(x) = 5x + 15 \), find each of the following:

### Tasks

a) \( P(x) = \) 

(Simplify your answer. Use integers or decimals for any numbers in the expression.)

b) \( R(80), C(80), \text{ and } P(80) \)

c) Using a graphing calculator, graph the three functions in the viewing window \([0, 210, 0, 3200]\).

### Solution Steps

1. **Calculate \( P(x) \):**

   - Formulate \( P(x) \) from the given \( R(x) \) and \( C(x) \) equations.
   - Simplify: \( P(x) = (58x - 0.3x^2) - (5x + 15) \).

2. **Calculate \( R(80), C(80), \text{ and } P(80) \):**

   - Substitute \( x = 80 \) into \( R(x), C(x), \text{ and } P(x) \) and compute the values.

3. **Graphing:**

   - Use a graphing calculator to plot \( R(x), C(x), \text{ and } P(x) \).
   - Set the viewing window \([0, 210, 0, 3200]\) to ensure all functions are visible within these limits.

### Graphs Description

- **Revenue Function \( R(x) \):** A parabola opening downward, showing how revenue changes with the number of carts produced.
- **Cost Function \( C(x) \):** A linear line, showing a straightforward increase in cost with each additional cart.
- **Profit Function \( P(x) \):** Represents the profitability, potentially a complex curve indicating where profits peak or drop to zero based on production quantity.

Ensure to utilize
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Transcribed Image Text:### Problem Overview In economics, functions that involve revenue, cost, and profit are used. For example, suppose that \( R(x) \) and \( C(x) \) denote the total revenue and the total cost, respectively, of producing a new grocery cart for a wholesaler. The difference \( P(x) = R(x) - C(x) \) represents the total profit for producing \( x \) carts. Given \( R(x) = 58x - 0.3x^2 \) and \( C(x) = 5x + 15 \), find each of the following: ### Tasks a) \( P(x) = \) (Simplify your answer. Use integers or decimals for any numbers in the expression.) b) \( R(80), C(80), \text{ and } P(80) \) c) Using a graphing calculator, graph the three functions in the viewing window \([0, 210, 0, 3200]\). ### Solution Steps 1. **Calculate \( P(x) \):** - Formulate \( P(x) \) from the given \( R(x) \) and \( C(x) \) equations. - Simplify: \( P(x) = (58x - 0.3x^2) - (5x + 15) \). 2. **Calculate \( R(80), C(80), \text{ and } P(80) \):** - Substitute \( x = 80 \) into \( R(x), C(x), \text{ and } P(x) \) and compute the values. 3. **Graphing:** - Use a graphing calculator to plot \( R(x), C(x), \text{ and } P(x) \). - Set the viewing window \([0, 210, 0, 3200]\) to ensure all functions are visible within these limits. ### Graphs Description - **Revenue Function \( R(x) \):** A parabola opening downward, showing how revenue changes with the number of carts produced. - **Cost Function \( C(x) \):** A linear line, showing a straightforward increase in cost with each additional cart. - **Profit Function \( P(x) \):** Represents the profitability, potentially a complex curve indicating where profits peak or drop to zero based on production quantity. Ensure to utilize
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