choose the response option that best answers the question.

in chemistry class, a student has earned scores of 64, 69, and 73 on three tests. they must maintain an average of 70 to pass the course. what score must the student earn on the final exam to pass the course?

72
74
76
78

Question

choose the response option that best answers the question.

in chemistry class, a student has earned scores of 64, 69, and 73 on three tests. they must maintain an average of 70 to pass the course. what score must the student earn on the final exam to pass the course?

72
74
76
78

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [], "new_concepts": [ "Weighted Average", "Algebraic Modeling" ], "current_concepts": [ "Arithmetic Mean", "Weighted Average", "Algebraic Modeling" ] } ## Set up the average equation $$ \begin{aligned} &\text{Let } x = \text{score on the final exam}\ &\frac{64 + 69 + 73 + x}{4} \ge 70 \end{aligned} $$ ## Solve for the required score $$ \begin{aligned} &206 + x \ge 280\ &x \ge 74 \end{aligned} $$

72

74

76

78

{ "subject": "Mathematics", "question_type": "Multiple Choice", "knowledge_point": [ "Mathematics", "Algebra", "Arithmetic Mean" ] }

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Question

Explanation:

Set up the average equation

Solve for the required score

Answer: