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D. Arithmetic Series and Word Problems

Recall the steps for solving word problems from Lesson 1.1.

  1. Read the question carefully, and define the variables based on the problem, including the variable you are trying to solve for.
  2. Choose the formula(s) you will use to solve the problem.
  3. Substitute known values for the variables.
  4. Solve the problem and check your answer by putting it back into the original equation to ensure that it makes sense. It is also important to consider whether the solution makes sense in the context of the problem.