Entry Exam Category: High School Equivalency Exams
Course: HiSET
Exam: HiSET Math Practice Test
Practice Question
Let f(x) = 3x². What is f(-2x)?
Answer Choices
- A: -36x²
- B: -12x²
- C: -6x²
- D: 12x²
- E: 36x²
Correct Answer: D
Rationale: f(-2x) = 3(-2x)² = 3(4x²) = 12x². Options: A (-36x²), B (-12x²), C (-6x²), E (36x²) incorrect; D correct.