{"status": "success", "data": {"description_md": "A function $f$ has the property that $f(3x-1)=x^2+x+1$ for all real numbers $x$. What is $f(5)$?\n\n$\\mathrm {(A)} 7\\qquad \\mathrm {(B)} 13\\qquad \\mathrm {(C)} 31\\qquad \\mathrm {(D)} 111\\qquad \\mathrm {(E)} 211$\n___\nFull credit goes to [MAA](https://maa.org/) for authoring these problems. These problems were taken on the [AOPS](https://artofproblemsolving.com/) website.", "description_html": "<p>A function  <span class=\"katex--inline\">f</span>  has the property that  <span class=\"katex--inline\">f(3x-1)=x^2+x+1</span>  for all real numbers  <span class=\"katex--inline\">x</span> . What is  <span class=\"katex--inline\">f(5)</span> ?</p>&#10;<p> <span class=\"katex--inline\">\\mathrm {(A)} 7\\qquad \\mathrm {(B)} 13\\qquad \\mathrm {(C)} 31\\qquad \\mathrm {(D)} 111\\qquad \\mathrm {(E)} 211</span> </p>&#10;<hr><p>Full credit goes to <a href=\"https://maa.org/\">MAA</a> for authoring these problems. These problems were taken on the <a href=\"https://artofproblemsolving.com/\">AOPS</a> website.</p>", "hints_md": "", "hints_html": "", "editorial_md": "", "editorial_html": "", "flag_hint": "", "point_value": 2, "problem_name": "2007 AMC 12B Problem 9", "can_next": true, "can_prev": true, "nxt": "/problem/07_amc12B_p10", "prev": "/problem/07_amc12B_p08"}}