You set up a lemonade stand your profit is equal to your revenue from lemonade sales minus your cost to operate the stand your cost is eight dollars how many cups of lemonade or must you sell to earn a profit of $30

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?