Bob but 3 passive more cars. He gave for cars to Ann. Bob has 11 cars left. How many model cars when each pack?

quit

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.

add 8+12 to get a simplified answer of 12r-20