What is the area under f(x) = x² from x = 0 to x = 3? A 3 B 9 C 27 D 27/3 = 9 ✓ Correct Answer: Option B ∫₀³ x² dx = [x³/3]₀³ = 27/3 - 0 = 9. Practice AP Exam Prep Quizzes → Browse All Questions Study Flashcards