Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 2 - Real Numbers - Chapters 1-2 Cumulative Review Problem Set: 48

Answer

Penny chose the number $4n-5$.

Work Step by Step

Let us start at Ginny's number, $n$. First, we must multiply this number by $4$ to because it says "four times the number chosen". This gives us $4n$. Since Penny's number is $5$ less than this, we must subtract $5$. We end up at $4n-5$
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