Every year in the US each working American typically pays in taxes a percentage of his or her earnings (minus the stand deuction). Karen's 2005 taxes were calculated based on the formula T(x)= .22(x-6500). That year the standard deduction was $6,500 & her tax bracket paid 22%. Write the function that will determine her 2006 taxes assuming she receives a raise that places her in a 33% braket. So I wrote at .33(x-6,500). Seemed simply enough, but I guess maybe it was too simple. The book answer is .33(1.25x-6,500). What I don't understand is where the 1.25 came from.