In which of the following situations would it be appropriate to use the midpoint formula? A. To hang a lamp in the center of a room.

B. To determine the length of fencing needed along one side of your yard.

C. To find the distance between your home and school.

D. To calculate the amount of string needed for a clothesline.

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?