Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 6 - Algebra: Equations and Inequalities - Chapter 6 Test - Page 406: 18

Answer

See Below

Work Step by Step

Consider the inequality for the variable x, \[-3\le 2x+1<6\] This gives two type of inequalities both for the variable x, \[2x+1<6\] ……(1) \[2x+1\ge -3\] ……(2) Consider the inequality (1) for the variable x, \[\begin{align} & 2x+1<6 \\ & 2x<6-1 \\ & 2x<5 \\ & x<2.5 \end{align}\] Consider the inequality (2) for the variable x, \[\begin{align} & 2x+1\ge -3 \\ & 2x\ge -3-1 \\ & 2x\ge -4 \\ & x\ge -2 \end{align}\] The value of x which satisfies the inequality is, \[-2\le x
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