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Models and Applications

Key Concepts

  • A linear equation can be used to solve for an unknown in a number problem.
  • Applications can be written as mathematical problems by identifying known quantities and assigning a variable to unknown quantities. 
  • There are many known formulas that can be used to solve applications. Distance problems, for example, are solved using the \(d =rt\) formula.
  • Many geometry problems are solved using the perimeter formula \(P = 2L + 2W\), the area formula \(A = LW\), or the volume formula \(V = LWH\).