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The table below presents selected values in a functional relationship.

The table below presents selected values in a functional relationship. Write an equation that describes this functional relationship.

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The table below presents selected values in a functional relationship.

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  1. The table below presents selected values in a functional relationship. Write an equation that describes this functional relationship.

  2. Jeb’s stereo is playing at a volume of 75 decibels. If the decibel level reaches 120 decibels, the neighbors will complain. Write an inequality to model q, the number of decibels Jeb can increase the volume before the neighbors complain.

  3. Jacob, Barbara, and Felix all have part-time jobs after school. Jacob earns $5 more per week than Felix, and Barbara earns twice as much per week as Jacob. The combined earnings of these three students are $115 per week. Write an equation that can be used to find how much each student earns per week.

  4. Sharon kept track of her expenses last week. She spent $4 more on movie rentals than she did on lunches. She spent five times as much fixing her car as she did on movie rentals. If Sharon spent a total of $80 last week on these three expenses, how much did her car repairs cost?

  5. The lengths of the three sides of a triangle are represented by the expressions 2m + 5, m – 1, and 7m + 3. Write an expression in the terms of m that can be used to represent the perimeter of the triangle.

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