a:1:{i:0;a:13:{s:2:"id";s:3:"713";s:7:"answer1";s:30:"<p>s= 4t +0,6t<sup>2</sup></p>";s:7:"answer2";s:31:"<p>s= 4t + 0,3t<sup>2</sup></p>";s:7:"answer3";s:29:"<p>s= 4t + 4t<sup>2</sup></p>";s:7:"answer4";s:28:"<p>s= 4t +2t<sup>2</sup></p>";s:7:"answer5";s:0:"";s:7:"answer6";s:0:"";s:7:"answer7";s:0:"";s:7:"answer8";s:0:"";s:7:"answer9";s:0:"";s:8:"answer10";s:0:"";s:4:"good";s:10:"0100000000";s:8:"question";s:4:"1973";}}