Which equation describes the line graphed above? JUST NEED ANSWER NO NEED FOR EXPLANATION

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?

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

What is the area of the shaded sector?