Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - 1-1 Variables and Expressions - Practice and Problem-Solving Exercises - Page 7: 12



Work Step by Step

In general, the words "product of" and "times" represents the mathematical operation for multiplication. The product of numerical expression $15$ and algebraic expression $c$ indicates that the variable $c$ is increased itself by $15$times. The multiplication operation is indicated by symbol "$\times$" or by a dot in between or by placing each expression in brackets. Therefore, product of $15$ and $c$ is represented as $15\cdot c$, $15\times c$ or $15 (c)$. Since, the product involves only a single variable, it is best represented as $15c$.
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