An online shopping club has 13500 members when it charges $8 per month for membership. for each $1 monthly increase in membership fee, the club loses approximately 500 of its existing members

which expression represents the approximate length of bc?

step-by-step explanation:

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.