2: 5-44 The following table gives the average monthly ex- change rate between the U.S. dollar and the euro for 2009. It shows that 1 euro was equivalent to 1.289 U.S. dollars in January 2009. Develop a trend line that could be used to predict the exchange rate for 2010. Use this model to predict the exchange rate for January 2010 and February 2010. MONTH EXCHANGE RATE January 1.289 February 1.324 March 1.321 April 1.317 May 1.280 June 1.254 July 1.230 August 1.240 September 1.287 October 1.298 November 1.283 December 1.311