Math Problem Statement
based off this answer this
Create a system to determine how much money you need and how to allocate work hours between two jobs to meet your monthly expenses. Constraints include income and total work hours per month.
Solution
Here’s the step-by-step breakdown of solving the given task:
Problem Recap:
- Total income needed: $1,475 per month
- Work-hour constraints: A maximum of 172 hours per month
- Two jobs:
- Job 1 pays $8.25/hour → work hours.
- Job 2 pays $9.00/hour → work hours.
Step 1: Write the inequalities
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Total hours worked constraint: (You cannot work more than 172 hours in a month.)
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Income constraint: (You must earn at least $1,475.)
Step 2: Graph the inequalities
Coordinate system:
- : hours worked at $8.25/hour.
- : hours worked at $9.00/hour.
Steps to graph:
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Plot the boundary line for :
- When , (point: ).
- When , (point: ).
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Plot the boundary line for :
- When , (point: ).
- When , (point: ).
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Shade:
- For , shade below the line .
- For , shade above the line .
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Identify the feasible region: It is the overlapping shaded area satisfying both constraints.
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Math Problem Analysis
Mathematical Concepts
Linear Inequalities
Systems of Equations
Graphing Inequalities
Formulas
x + y ≤ 172 (maximum total work hours)
8.25x + 9.00y ≥ 1475 (minimum income requirement)
Theorems
Linear Inequality Theorem
Intersection of Constraints in Graphing
Suitable Grade Level
Grades 9-11