{"id":"act_practice_pdf:pt2:math:015","source_id":"act_practice_pdf","source_item_id":"pt2-math-015","external_id":null,"program":"ACT","section":"math","category_code":"PHM","category":"Preparing for Higher Math","subcategory_code":"F","subcategory":"Functions","form_id":"act_practice_pdf:pt2","passage_id":null,"position":15,"scored":true,"layout_warning":"Stacked notation (fractions, radicals, matrices) does not survive text extraction. The image above is the question as printed; the text below it is approximate.","stem":"What is the amplitude of the graph of function _ 1 f (x) = cos (3x + π) , shown in the standard (x,y) coordinate plane? y O x −1 _ 1","stimulus":"","stimulus_html":"<figure><img src=\"/api/assets/d70f4e7c8e7d52e4224f8ce7d04ea2c5192bc3829cbf6b34763b3735532116c9\" alt=\"Question 15 as printed in the ACT Practice Test 2 booklet\"><figcaption>As printed in the official booklet.</figcaption></figure>","stem_html":"<p>What is the amplitude of the graph of function _ 1 f (x) = cos (3x + π) , shown in the standard (x,y) coordinate plane? y O x −1 _ 1</p>","rationale_html":null,"correct_answer":["B"],"equiv_key":"98b1123678498f516d251dfb","has_media":true,"has_mathml":false,"has_table":false,"section_label":"Mathematics","options":[{"label":"A","content_html":"<p>_ 1</p>","ord":0},{"label":"B","content_html":"<p></p>","ord":1},{"label":"C","content_html":"<p>2</p>","ord":2},{"label":"D","content_html":"<p>3</p>","ord":3}],"passage":null,"attribution":{"source_id":"act_practice_pdf","source_name":"Official ACT full-length practice tests (PDF)","rights_holder":"ACT Education Corp.","canonical_url":"https://www.act.org/content/act/en/products-and-services/the-act/test-preparation.html","retrieved_from":"https://www.act.org/content/act/en/products-and-services/the-act/test-preparation.html","attribution":"Full-length ACT practice tests © ACT Education Corp., published free at act.org. Questions are retired items from previous ACT administrations.","disclaimer":"Extracted from a print-layout PDF: equations, figures and charts do not survive as text. Use the original PDF for anything that renders poorly. ACT® is a registered trademark of ACT Education Corp., which is not affiliated with, does not sponsor, and does not endorse this project.","license":"ACT Education Corp. copyright. Published free for personal test preparation; not licensed for redistribution.","redistributable":false,"item_count":342},"equivalents":[]}