Big Ideas Math: Modeling Real Life, Grade 6
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Big Ideas Math: Modeling Real Life, Grade 6 View details
7. Writing and Graphing Inequalities
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Exercise 5 Page 385

Substitute 3 into the given inequality and then simplify.

No, see solution.

Practice makes perfect
We can determine whether 3 is a solution by substituting it into the inequality and simplifying.
b+4 < 6
3 + 4 ? < 6
7 < 6 *
Since 7 is not less than 6, we got a false statement. This means that b=3 is not a solution of the inequality.