The cell phone company that Laura uses charges $40.00 per month for 500 minutes and $0.40 per minute for every minute over 500 m
inutes. Laura's cell phone bill for August was $73.60. In September, the cost per minute for every minute over 500 minutes was changed to $0.30 per minute. If Laura uses the same number of minutes in September as she did in August, what will her
total cell phone bill be in September?
