Naomi is deciding between two different movie streaming sites to subscribe to. Plan A costs $14 per month plus $1 per movie watched. Plan B costs $10 per month plus $2 per movie watched. Let AA represent the monthly cost of Plan A if Naomi watches xx per month, and let BB represent the monthly cost of Plan B if Naomi watches xx movies per month. Graph each function and determine which plan would be cheaper if Naomi plans on watching 6 movies each month.