Which graph represents the function of f(x) = the quantity of 4 x squared minus 16, all over 2 x minus 4?

Witch represents the inverse of the function f(x)=1/4x-12

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?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55