{"id":"cb_practice_pdf:t9-math-m1-q5","source_id":"cb_practice_pdf","source_item_id":"t9-math-m1-q5","external_id":null,"ibn":null,"question_id":null,"program":"SAT","module":"math","domain_code":null,"domain":null,"skill_code":null,"skill":null,"difficulty":null,"score_band":null,"answer_type":"mcq","answer_source":"rationale","layout_warning":"Part of this question was typeset outside the text flow — a fraction, subscript or similar — and PDF extraction re-inserted it in the wrong place. The wording is reliable; the symbols may be out of order.","form_id":"cb_practice_pdf:test-9","module_number":1,"position":5,"stem":"9x^2 +5x Which expression is equivalent to? x(9x+5)","stimulus":"","stimulus_html":null,"stem_html":"<p>9x^2 +5x Which expression is equivalent to? x(9x+5)</p>","rationale_html":"<p>Choice A is correct. Since x is a factor of each term in the given expression, the 9 + 5 9 +5 expression is equivalent to x^ xh x^ h, or x^ x h. 45 2+5 9 2+5 Choice B is incorrect. This expression is equivalent to x x, not x x. 9 2+45 9 2+5 Choice C is incorrect. This expression is equivalent to x x, not x x. 9 3+5 2 9 2+5 Choice D is incorrect. This expression is equivalent to x x , not x x.</p>","correct_answer":["A"],"has_media":false,"has_mathml":false,"has_table":false,"source_created_at":null,"source_updated_at":null,"options":[{"label":"A","content_html":"<p>5x(9x+1)</p>","ord":0},{"label":"B","content_html":"<p>9x(x+5)</p>","ord":1},{"label":"C","content_html":"<p>x^2 (9x+5)</p>","ord":2},{"label":"D","content_html":"","ord":3}],"attribution":{"source_id":"cb_practice_pdf","source_name":"College Board full-length SAT practice tests (PDF)","rights_holder":"College Board","canonical_url":"https://satsuite.collegeboard.org/practice/practice-tests/paper","retrieved_from":"https://satsuite.collegeboard.org/practice/practice-tests/paper","attribution":"Full-length SAT practice tests 4–11 © College Board, published free at satsuite.collegeboard.org.","disclaimer":"Extracted from PDF layout: equations, figures and tables do not survive intact. Use the original PDFs for anything the text renders poorly. SAT® is a trademark registered by the College Board, which is not affiliated with and does not endorse this project.","license":"College Board copyright. Free to download; not licensed for redistribution.","redistributable":false,"item_count":905}}