The above charts show the exchange rates between the US dollar and two other currencies in 2008. During the months shown, the number of Mexican pesos (MXN) in one dollar rose (from 10.2 to 13.1). The number of British pounds (£) in one dollar also rose (from .51 to .65). Based on the charts, did the value of the US dollar increase or decrease during these months?

"six months ago, several of molly's friends joined the trimtime fitness center. each of them participated in trimtime's weight-reduction and fitness regimen. all reported substantial weight reduction, and all are visibly slimmer. molly is convinced. she joins trimtime and enrolls in the program, hoping and expecting to see the same results. she is especially delighted to learn that trimtime had adjusted its program to make it even more effective in a shorter period of time." what is the feature in question/attribute of interest in this argument?