The location of four buildings on a coordinate grid are as follows:

building 1 is at (−5, −3)(−5, −3) .

building 2 is at (−5, 5)(−5, 5) .

building 3 is at (4, 5)(4, 5) .

building 4 is at (4, −3)(4, −3) .

a bike courier begins at building 1 and then delivers packages to building 2 and then building 3. then she bikes back to building 1. the path between each building is a straight line. one unit on the coordinate grid equals 100 feet.

what is the total distance the courier biked?