Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 3 - Solving Inequalities - 3-4 Solving Multi-Step Inequalities - Practice and Problem-Solving Exercises: 13

Answer

3.5≤r

Work Step by Step

9≤−12+6r ⟶ add 12 to both sides 9+12≤−12+6r+12 ⟶ simplify 21≤6r ⟶ divide both sides by 6 21÷6≤6r÷6 ⟶ simplify 3.5≤r Check the endpoint. 9=−12+6(3.5) 9=−12+21 9=9✓ Check the inequality. 9≤−12+6(4) 9≤−12+24 9≤12✓
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