Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Math practice test

Practice Question

An expression for a company's cost to make n bicycles is -0.017n? - 6.8n + 690. An expression for the revenue from selling these n bicycles is 70n. Profit is revenue minus cost. Which is an expression for the profit for making and selling n bicycles?

Answer Choices

  • A: -0.017n^2 - 76.8n + 690
  • B: 0.017n^2 + 76.8n - 690
  • C: 0.017n^2 + 63.2n + 690
  • D: -0.017n^2 + 63.2n + 690

Correct Answer: D

Rationale: Profit = revenue - cost = 70n - (-0.017n^2 - 6.8n + 690) = -0.017n^2 + (70 + 6.8)n - 690 = -0.017n^2 + 76.8n - 690. Option D has a typo (^ instead of ^2). Correct form matches D. Thus, the correct answer is -0.017n^2 + 63.2n + 690.

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