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: 29

Answer

$9\geq q$
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Work Step by Step

$63\geq7q\longrightarrow$ divide both sides by 7 $63\div7\geq7q\div7\longrightarrow$ divide $9\geq q$ Check the endpoint. Substitute 9 for q. $63\overset?=7(9)$ $63=63\checkmark$ Check the inequality. Choose any number less than 9 and substitute for q. $63\overset?\geq7(8)$ $63\geq56\checkmark$ Since 9 is included in the solution, the endpoint of the graph is a solid circle.
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