Free points do u want some?

What is the difference between regular convex and concave polygons

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?

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height