Plz help! I need this answer fast!
A cell phone service provider offers two plans. Plan A includes a fee of $25 per month and charges $0.25 for every call. Plan B includes a fee of $40 per month and offers unlimited calls. For what number of phone calls is the cost of plan B less than the cost of plan A?
more than 60 calls
more than 160 calls
more than 120 calls
more than 100 calls