Big Ideas Math: Modeling Real Life, Grade 7
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4. Writing and Graphing Inequalities
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Exercise 19 Page 149

Substitute - 5 into the given inequality and then simplify.

No.

Practice makes perfect
We can determine whether - 5 is a solution by substituting it into the inequality and simplifying.
- 15 < 5h
- 15 ? < 5( - 5)
- 15 < - 25 *
Since - 15 is not less than - 25, - 5 is not a solution.