{"id":1913,"date":"2021-12-02T19:39:57","date_gmt":"2021-12-03T00:39:57","guid":{"rendered":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/back-matter\/answer-key-7-10\/"},"modified":"2022-11-02T10:38:22","modified_gmt":"2022-11-02T14:38:22","slug":"answer-key-7-10","status":"publish","type":"back-matter","link":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/back-matter\/answer-key-7-10\/","title":{"raw":"Answer Key 7.10","rendered":"Answer Key 7.10"},"content":{"raw":"[latex]\\begin{array}{rrl}\n\\text{2012 average age}&amp;=&amp;\\phantom{-}\\text{2016 average age} \\\\ \\\\\n10x&amp;=&amp;\\phantom{-}9(x+4)+N \\\\\n10x&amp;=&amp;\\phantom{-}9x+36+N \\\\\n-9x&amp;&amp;-9x \\\\\n\\hline\nx&amp;=&amp;\\phantom{-}36+N \\\\ \\\\\nx&amp;=&amp;\\phantom{-}36+N \\\\\n-36&amp;&amp;-36 \\\\\n\\hline\nx-36&amp;=&amp;\\phantom{-}N\n\\end{array}[\/latex]\n\n&nbsp;\n\nThis means the new member is 36 years younger than the average age in 2012.","rendered":"<p>[latex]\\begin{array}{rrl} \\text{2012 average age}&=&\\phantom{-}\\text{2016 average age} \\\\ \\\\ 10x&=&\\phantom{-}9(x+4)+N \\\\ 10x&=&\\phantom{-}9x+36+N \\\\ -9x&&-9x \\\\ \\hline x&=&\\phantom{-}36+N \\\\ \\\\ x&=&\\phantom{-}36+N \\\\ -36&&-36 \\\\ \\hline x-36&=&\\phantom{-}N \\end{array}[\/latex]<\/p>\n<p>&nbsp;<\/p>\n<p>This means the new member is 36 years younger than the average age in 2012.<\/p>\n","protected":false},"author":90,"menu_order":67,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":"cc-by-nc-sa"},"back-matter-type":[],"contributor":[],"license":[56],"class_list":["post-1913","back-matter","type-back-matter","status-publish","hentry","license-cc-by-nc-sa"],"_links":{"self":[{"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/pressbooks\/v2\/back-matter\/1913","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/pressbooks\/v2\/back-matter"}],"about":[{"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/wp\/v2\/types\/back-matter"}],"author":[{"embeddable":true,"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/wp\/v2\/users\/90"}],"version-history":[{"count":1,"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/pressbooks\/v2\/back-matter\/1913\/revisions"}],"predecessor-version":[{"id":1914,"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/pressbooks\/v2\/back-matter\/1913\/revisions\/1914"}],"metadata":[{"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/pressbooks\/v2\/back-matter\/1913\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/wp\/v2\/media?parent=1913"}],"wp:term":[{"taxonomy":"back-matter-type","embeddable":true,"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/pressbooks\/v2\/back-matter-type?post=1913"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/wp\/v2\/contributor?post=1913"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/opentextbc.ca\/intermediatealgebraberg\/wp-json\/wp\/v2\/license?post=1913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}