Abeauty is paid a 12.5% commission rate selling cosmetics. what would her total sales need to be in order to earn a commission of $100

I'm not sure but it might be 1250

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.