Based on data from 1995 to 2005, the juvenile arrest rate for curfew violations may be modeled by A(t) = 0.892*3^t - 13.5*t^2 + 22.3*t + 579.where A is the number of juveniles arrested per 100,000 juveniles and t is the number of years since 1995. According to the model, what was the average rate of change in the juvenile arrest rate between 1996 and 2005