Ineed finishing this.
this is what i have so far
not sure if i'm right

81/3 = 27

x^(12-3) = x^9

(27x^9)^1/3

? ?

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?