Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Math practice test
Practice Question
To the nearest tenth, what is the value of (t^3 - 35t^2)/(-4t - 8) when t = 12?
Answer Choices
- A: 14.4
- B: 59.1
- C: 23
- D: 87.4
Correct Answer: B
Rationale: Simplify: (t^3 - 35t^2)/(-4t - 8) = t^2(t - 35)/(-4(t + 2)) = -t^2(t - 35)/(4(t + 2)). For t = 12: -12^2(12 - 35)/(4(12 + 2)) = -144(-23)/(4*14) = 3312/56 ? 59.1429. Nearest tenth: 59.1. Thus, the correct answer is 59.1.