The line plot shows the numbers of weekly sales a salesperson made in the first nine weeks of a ten week sales period. The salesperson's target is an average of 14 sales each week. How many sales does the sales person need in the tenth week to meet the target average?

12, 13, 13 , 14,14,14, 15,15,15

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?