Math Problem Statement
Solution
To help Joey determine how many weeks he needs to keep his money in the bank until it reaches at least $250, we can set up an inequality based on his starting amount and weekly additions.
Joey has:
- $100 initially
- Adds $25 each week (let represent the number of weeks)
The condition states he wants his balance to be at least $250. Therefore, we need the inequality:
From the choices provided, the correct inequality is: 100 + 25w ≥ 250
This inequality will allow Joey to solve for to find out how many weeks it will take to reach or exceed $250.
Would you like further details on how to solve this inequality or have any other questions?
Here are some additional questions for exploration:
- How would you solve the inequality for ?
- What would the solution mean in the context of weeks Joey needs?
- What if Joey wants at least $300? How would the inequality change?
- How would the inequality change if Joey were adding $30 per week instead?
- What if Joey starts with $150 instead of $100?
Tip: When solving inequalities, remember that dividing or multiplying by a negative number reverses the inequality sign.
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Math Problem Analysis
Mathematical Concepts
Algebra
Inequalities
Formulas
Starting amount + (weekly addition * weeks) ≥ desired amount
Theorems
Properties of inequalities
Suitable Grade Level
Grades 6-8