Algebra 1

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

Chapter 3 - Solving Inequalities - 3-2 Solving Inequalities Using Addition or Subtraction - Practice and Problem-Solving Exercises - Page 175: 38



Work Step by Step

$8.6+z\lt14\longrightarrow$ subtract 8.6 from each side $8.6+z-8.6\lt14-8.6\longrightarrow$ subtract $z\lt5.4$ Check the inequality. $8.6+4\overset?\lt14$ $12.6\lt14\checkmark$ Since 5.4 is not included in the solution, the endpoint of the graph is an open circle.
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