Solve the linear system of equations using the linear combination method. 4x−9y=20

x−6y=20

A- x = -4, y = -4

B- x = 3, y = 5

C- x = 4, y = 4

D- x = 5, y = -3
there might be more then one answer

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?