Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 1 - Section 1.1 - Linear Equations in One Variable - 1.1 Exercises - Page 52: 71

Answer

x = 35

Work Step by Step

1. Given: 0.04x + 0.06 + 0.03x = 0.03x + 1.46 2. Multiply both sides by 10 to the 2nd power to turn decimals into whole numbers: 100(0.04x + 0.06 + 0.03x) = (0.03x + 1.46)100 4x + 6 + 3x = 3x + 146 3. Add and subtract: 4x = 140 4. Divide: x = 35 5. Check: 0.04*35 + 0.06 + 0.03*35 = 0.03*35 + 1.46 -69.3 = -69.3, so 35 is a correct solution of the equation.
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