Eight friends want to play enough games of chess to be sure everyone plays everyone else. How many games will they have to play?

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

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?

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?