8 what is $150 + a$, when $a = 220$?

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{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "blank_filling_formatter", "explain_then_answer", "tutor", "mastery_adaptive_brevity" ], "needs_drawing": false, "concepts_used": [ "Algebraic Evaluation", "Variable Substitution" ], "new_concepts": [], "current_concepts": [ "Algebraic Evaluation", "Variable Substitution" ] } ## Identify the given values Using the *Variable Substitution* knowledge point $$ \begin{aligned} &\text{Expression: } 150 + a\ &\text{Value: } a = 220 \end{aligned} $$ ## Substitute and evaluate Using the *Algebraic Evaluation* knowledge point $$ \begin{aligned} 150 + a &= 150 + 220\ &= 370 \end{aligned} $$ What is $150 + a$, when $a = 220$? 370 { "subject": "Mathematics", "question_type": "Fill-in-the-blank", "knowledge_point": [ "Mathematics", "Algebra", "Algebraic Evaluation" ] }

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Identify the given values

Substitute and evaluate

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