{"id":"cb_practice_pdf:t9-math-m1-q13","source_id":"cb_practice_pdf","source_item_id":"t9-math-m1-q13","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":"spr","answer_source":"rationale","layout_warning":null,"form_id":"cb_practice_pdf:test-9","module_number":1,"position":13,"stem":"y = −2x 3x+y = 40 The solution to the given system of equations is (x,y). What is the value of x?","stimulus":"","stimulus_html":null,"stem_html":"<p>y = −2x 3x+y = 40 The solution to the given system of equations is (x,y). What is the value of x?</p>","rationale_html":"<p>40 The correct answer is . It’s given in the first equation of the system that =- - y 2x. Substituting 2x for y in the second equation of the system yields 3 + -2 =40 x ^ xh . Combining like terms on the left-hand side of this equation =40 40 yields x . Therefore, the value of x is .</p>","correct_answer":["40"],"has_media":false,"has_mathml":false,"has_table":false,"source_created_at":null,"source_updated_at":null,"options":[],"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}}