Brayden is deciding between two different movie streaming sites to subscribe to. Plan A costs $18 per month plus $2 per movie watched. Plan B costs $30 per month plus $1 per movie watched. Let AA represent the monthly cost of Plan A if Brayden watches xx per month, and let BB represent the monthly cost of Plan B if Brayden watches xx movies per month. Write an equation for each situation, in terms of x, commax, and determine the interval of movies watched, x, commax, for which Plan A is cheaper than Plan B.
