8th Grade Math

Algebra foundations, geometry, and mathematical modeling for eighth grade students.

Practical Applications

Budgeting and Saving with Algebra

Using Algebra for Money Matters

Algebra can help you manage your money! You can use equations to figure out how much you need to save to reach a goal or how long it will take to buy something you want.

Setting Up Equations

Decide your savings goal, how much you save each week, and let algebra do the rest.

Real-World Example

If you want a bike that costs $120 and you save $15 a week, the equation is \(15w = 120\). Solve for \(w\) to find out how many weeks you'll need.

Why It Helps

Planning with algebra helps you make smart decisions and avoid running out of money.

Examples

  • Saving $10 a week for a $100 video game: \(10w = 100\), so \(w = 10\) weeks.

  • If you have $30 and want to buy snacks that cost $2 each, \(2x \leq 30\) tells you how many you can buy.