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Common Core Standard HSA-CED.A.3 Questions

Represent constraints by equations or inequalities, and by systems of equations and/or inequalities, and interpret solutions as viable or nonviable options in a modeling context. For example, represent inequalities describing nutritional and cost constraints on combinations of different foods.

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Grade 12 Functions CCSS: HSA-CED.A.3
What x values must be excluded from the domain of [math]f(x)=(3x)/(7x+21)[/math]?
  1. [math]x=3[/math]
  2. [math]x=-3[/math]
  3. [math]x=0[/math]
  4. [math]x=-7[/math]

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