Of 200 employees of a store located in downtown Boston, 72 people take the subway to work, 48 take the bus, and 28 people take both the subway and the bus. How many employees (a) Take the subway or the bus to work?

(b) Take only the bus to work?

(c) Take either the bus or the subway to work (but not both)?

(d) Get to work by some other means?

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.

answer: (-6,3)

step-by-step explanation: