题目

While I was in my 4th month of pregnancy (妊娠期) with my second child, we were preparing for a trip to Louisiana, where Marshall’s family live, to celebrate Jane’s 2nd birthday. Two days before we were to leave, we got the shocking news that I was going to lose the baby. Not knowing when this would happen, we decided to continue with our trip. Since Marshall’s family lives on a 600-acre cattle farm, you often find that you have a lot of time to yourself to think when you are there. That is precisely what I did not want to do at this time. I told Marshall that I needed to get 某地近年来每年举办一次农副产品交易会，成交金额逐年增加.2009年的成交金额是25亿元，2011年的成交金额是36亿元．求该地区农副产品交易会成交金额的年平均增长率，并据此预测该地区2012年农副产品交易会的成交金额．设农副产品交易会成交金额的年平均增长率为x．（Ⅰ）分析：根据问题中的数量关系，用含x的式子表示：2010年的交易额是________；2011年的交易额是________；2012年的交易额是________；（Ⅱ）由以上关系式，列出方程，求出问题的解．