Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 1 - Equations and Inequalities - 1.2 Applications and Modeling with Linear Equations - 1.2 Exercises - Page 100: 7


Option $A$.

Work Step by Step

The mixture is made of only two ingredients, namely: $26\%$ acid and $34\%$ acid This means the resulting mixture's concentration wil range anywhere from $26\%$ to $34\%$. It cannot go lower than 26 percent nor go higher than 34 percent. Therefore, the concentration of the mixture can be $30\%$, $31\%$, and $33\%$. However, the concentration of the mixture cannot be $24\%$. The answer is Option $A$.
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