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: 41

Answer

$d\geq-1$
1501726692

Work Step by Step

$\frac{3}{5}+d\geq -\frac{2}{5}\longrightarrow$ subtract $\frac{3}{5}$ from each side $\frac{3}{5}+d-\frac{3}{5}\geq -\frac{2}{5}-\frac{3}{5}\longrightarrow$ subtract $d\geq -1$ Check the endpoint. $\frac{3}{5}+(-1)\overset?=-\frac{2}{5}$ $-\frac{2}{5}=-\frac{2}{5}\checkmark$ Check the inequality. $\frac{3}{5}+0\overset?\geq-\frac{2}{5}$ $\frac{3}{5}\geq-\frac{2}{5}\checkmark$ Since -1 is included in the solution, the endpoint of the graph is a solid circle.
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