14-4: Additional Problem Solving

Part 1

Example Modeling Periodic Savings Plans

You estimated your EFC for the first year of college using an online calculator. Your college calculated your EFC to be $1,800 more than your estimated EFC. You have 12 weeks to make up the difference. You devise a periodic savings plan. Your plan is to make weekly deposits for 12 weeks. Each deposit will be $10 more than the previous deposit.

If you follow your plan, how much will you deposit in the last week?

Solution

Model the situation.

Let x = the amount of the first week's deposit.

The first deposit will be $95. The last deposit will be $95 + $110 = $215.


End ofPage 495

Table of Contents

Digits, Grade 8, Volume 2, Homework Helper Unit D: Two-Dimensional Shapes Unit E: Measurement and Data Unit F: Personal Financial Literacy Unit G: Step-Up Lessons English/Spanish Glossary Formulas Math Symbols Formulas Measures Properties