Acell phone company charges a basic rate of $19.99 per month for 300 minutes of local usage. any local usage over 300 minutes is charged at $.10 per minute. all long distance calls are charged at $.25 per minute. write and simplify an expression that gives the total monthly bill if x is the number of local minutes and y is the number of long distance minutes. evaluate the expression if local usage totals 375 minutes and long distance usage totals 54 minutes.