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: 9


Option $D$

Work Step by Step

With $x$=second number, then "six times a second number" = $6x$ "three less than six times a second number" = first number = $6x-3$ The sum of the two numbers is 46 so $(6x-3) + x = 46$ Therefore, the equation needed to solve the given problem is the one in Option $D$.
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