Directions: This practice section contains 10 questions selected for their difficulty and for the mistakes Korean AA SL students make most often — domain restrictions on logarithms, off-by-one errors in sequences, sign errors in absolute-value integrals, and angle/quadrant slips in trigonometry. Work each problem fully before choosing an answer; selecting a choice immediately reveals the full worked solution, so treat every question as a final answer, not a guess. A Desmos graphing calculator is available in the bottom-right corner for the whole test.