Acell phone provider offers a plan that costs $30 per month plus $.20 per text message sent or received. a comparable plan cost $50 per month but offers unlimited text messaging. how many text messages would have to be sent or received in order for the plans to cost the same each month?

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?