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APPLICATION The student council wants to raise \(\$ 10,000\) to purchase computers. All students are encouraged to participate in a fund-raiser, but it is likely that some will not be able to. a. Pick at least four numbers to represent how many students might participate. Make a table showing how much each student will have to raise if each participant contributes the same amount. (a) b. Plot the points represented by your table on a calculator graph. Find an equation to fit the points. (a) c. Suppose there are only 500 students in the school. How would this number of students affect your graph? Sketch a graph to show this limitation. (a)

Short Answer

Expert verified
Students need to raise different amounts based on participation, following an inverse relation: \( y = \frac{10000}{x} \). With at most 500 students, the amount per student is least at full participation.

Step by step solution

01

Choose Participation Numbers

Let's choose the number of participating students as 100, 200, 300, 400, and 500. These values will allow us to analyze how different levels of participation affect the amount each student needs to raise.
02

Calculate Amount Raised per Student

For each number of participating students, calculate how much each needs to raise to reach the total goal of \$10,000. We use the formula: \[ \text{Amount per student} = \frac{\text{Total amount needed}}{\text{Number of students}} \]Applying this:- 100 students: \( \frac{10000}{100} = 100 \ \text{per student} \)- 200 students: \( \frac{10000}{200} = 50 \ \text{per student} \)- 300 students: \( \frac{10000}{300} \approx 33.33 \ \text{per student} \)- 400 students: \( \frac{10000}{400} = 25 \ \text{per student} \)- 500 students: \( \frac{10000}{500} = 20 \ \text{per student} \)
03

Create a Table

Align the numbers of participating students with the amount they need to raise: | Number of Students | Amount Raised per Student | |--------------------|--------------------------| | 100 | $100 | | 200 | $50 | | 300 | $33.33 | | 400 | $25 | | 500 | $20 |
04

Graph the Data

Plot the points from the table on a graph, with the x-axis representing the number of students and the y-axis representing the amount each student needs to raise. The points to plot are (100, 100), (200, 50), (300, 33.33), (400, 25), and (500, 20).
05

Find the Equation

The relationship between the number of students and the amount to be raised is an inverse relationship. The equation can be formulated as:\[ y = \frac{10000}{x} \]where \( y \) is the amount each student needs to raise, and \( x \) is the number of students.
06

Consider School Limit (500 Students)

With only 500 students in the school, the maximum participation is limited to 500. This means the graph will have a maximum x-value of 500, and the graph should be a curve approaching the x-axis as the number of students increases up to 500.
07

Sketch the Final Graph

Draw a curve starting from a high y-value at low x (for instance, (50, 200)), decreasing smoothly to the point (500, 20) on the x-axis. This visualizes the decreasing amount each student must raise as participation increases.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Graphing Equations
Graphing equations allows us to visually represent relationships between variables. In fundraising scenarios, we often deal with equations that model financial goals against participation levels. By plotting these equations on a graph, students can better visualize how each student's contribution changes as more students participate.

For example, consider the student council's fundraising goal of $10,000. If we create a graph where the x-axis represents the number of participating students and the y-axis shows how much each student needs to raise, we can see a clear pattern. As more students join in, the amount each one needs to contribute decreases - this can be shown as a curve that gets closer to the x-axis for higher numbers of students.
  • Start with a point when fewer students participate. Each previous step is visualized here.
  • As participation rises, plot how the required amount per student drops.
  • The plotted points then curve towards the x-axis, illustrating this decrease visually.
By using a graphing calculator or graph paper, students can plot these points to see the impact of participation levels on individual fundraising responsibilities.
Inverse Relationships
An inverse relationship is one where, as one variable increases, the other decreases proportionally. In this exercise, the relationship between the number of students participating and the amount each student needs to raise is inverse. When more students take part in fundraising, each contributes less to meet the goal.

The formula representing this inverse relationship is \[y = \frac{10000}{x}\]where \(y\) is the amount each student needs to raise, and \(x\) is the number of participating students. This formula indicates:
  • If only 100 students participate, each must raise \(100.
  • With 500 participants, the amount drops to \)20 each.
This type of relationship is common in many statistical models and can be highly insightful in planning and optimization.
Mathematical Modeling
Mathematical modeling involves using mathematics to represent real-world scenarios. This can be done by constructing equations and graphs that describe these situations. In the student council's fundraiser, our model helps us understand and predict how participation affects fundraising targets.

Creating a mathematical model involves several steps:
  • Identifying the variables: In our case, it's the number of students and amount raised per student.
  • Constructing the model: We formulated it as \[y = \frac{10000}{x}\].
  • Using the model: Calculate how much each participant should raise depending on different levels of involvement.
Mathematical models turn abstract ideas into concrete figures that help decision-making and strategic planning.
Student Participation
Student participation is a key factor in the success of collective funding efforts. When students engage in an activity, such as a fundraiser, their involvement directly impacts the outcome.

In our problem, understanding participation levels helps in determining:
  • Effectiveness of group efforts to meet financial goals.
  • Setting realistic targets for contributions each student should aim for.
  • Encouraging community within the school, as more students feel part of the effort.
Participation encourages teamwork and builds a sense of community, which can be motivating for students and create a successful campaign.

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Most popular questions from this chapter

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