Advanced Algebra: Linear and Literal Equations

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Across
  1. 4. a mathematical sentence that expresses the relationship between certain
  2. 6. An equation with more than one variable
Down
  1. 1. set of all rational and irrational numbers
  2. 2. a symbol or letter that represents a value
  3. 3. a defined and non-changing number
  4. 5. name this formula I=PRT