Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
4. Writing and Graphing Inequalities
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Exercise 30 Page 150

Substitute 15 into the given inequality and then simplify.

Yes.

Practice makes perfect
We can determine whether 15 is a solution by substituting it into the inequality and simplifying.
w/3 ≥ w - 12
15/3 ? ≥ 15 - 12
5 ? ≥ 15 - 12
5 ≥ 3 ✓
Since 5 is greater than 3, 15 is a solution.