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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 23 Page 149

Substitute 14 into the given inequality and then simplify.

No.

Practice makes perfect
We can determine whether 14 is a solution by substituting it into the inequality and simplifying.
7/8 - 3k < - 1/2
Substitute

k= 1/4

7/8 - 3 * 1/4 ? < - 1/2
MoveLeftFacToNumOne

a* 1/b= a/b

7/8 - 3/4 ? < - 1/2
ExpandFrac

a/b=a * 2/b * 2

7/8 - 6/8 ? < - 1/2
SubFrac

Subtract fractions

1/8 < - 1/2 *
Since 18 is not less than a negative number, 14 is not a solution.
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arrow_right Try It p.146-147
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Try It 2 (Page 146)
Try It 3 (Page 147)
Try It 4 (Page 147)
Try It 5 (Page 147)
arrow_right Self-Assessment for Concept & Skills p.147
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arrow_right Self-Assessment for Problem Solving p.148
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arrow_right Review & Refresh p.149
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arrow_right Concept, Skills, & Problem Solving p.149-150
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