If f(x) = 2x + 1, what is f⁻¹(x)? A (x − 1)/2 B 2x − 1 C (x + 1)/2 D 1/(2x + 1) ✓ Correct Answer: Option A Swap x and y: x = 2y + 1; then y = (x − 1)/2. Practice ACT Exam Prep Quizzes → Browse All Questions Study Flashcards