99.2% of ATMs levy a surcharge on users who are not account holders. The amount of the surcharge for non-account holders can be modeled as s(t) = 0.72(1.081) dollars where t is the number of years since 1995, data from 3 sts 13.t (a) Calculate the average rate of change in the amount of the surcharge for non-account holders between 2003 and 2007. Write the result in a sentence of interpretation. (Round your answer to two decimal places.) Between 2003 and 2007, the ATM surcharge for non account holders increased by an average of $ per year. (b) Calculate the change and the percentage change in the amount of the surcharge for non-account holders between 2003 and 2007. (Round your answers to two decimal places.) change percentage change %