Sandy went to the movies and purchased 3 movie tickets. She also purchased a large popcorn for $5.25. If she paid the cashier a total of $30.75, how much was each movie ticket?

8.5 dollars

Step-by-step explanation:

30.75 minus 5.25 is 25.5

25.5 divided by 3 is 8.5

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.