The sum of two polynomials is 10a2b2 – 8a2b + 6ab2 – 4ab + 2. if one addend is –5a2b2 + 12a2b – 5, what is the other addend? 15a2b2 – 20a2b + 6ab2 – 4ab + 7 5a2b2 – 20a2b2 + 7 5a2b2 + 4a2b2 + 6ab – 4ab – 3 –15a2b2 + 20a2b2 – 6ab + 4ab – 7

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?