standard_description: Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them). For example, the expressions y + y + y and 3y are equivalent because they name the same number regardless of which number y stands for.
problem_activity: The diagram below shows the space where a new garden will be developed. Each square unit in the grid is 1 square foot. What is the area of the new garden?
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aligns: no