Algebra 1

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

Chapter 3 - Solving Inequalities - 3-3 Solving Inequalities Using Multiplication or Division - Practice and Problem-Solving Exercises - Page 181: 20



Work Step by Step

$4t\lt-12\longrightarrow$ divide both sides by 4 $4t\div4\lt-12\div4\longrightarrow$ divide $t\lt-3$ Check the inequality. $4(-4)\overset?\lt-12$ $-16\lt-12\checkmark$ Since -3 is not included in the solution, the endpoint of the graph is an open circle.
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