Answer:
6-13=7 , 7-13=6
6+1=7,7-1=6,
Step-by-step explanation:
Okay well, if you make a graph, Point A (7,0) and Point B (4,6) are in the top right quadrant. and Point C (1,1) and Point D (5,3) are in the top left, top right, and bottom left quadrant (I'll link a photo of the graph.)
so the lines intersect and make it perpendicular
I believe it is 56 because 7•8 is 56 and 1•56 is 56
10 to 11 = 1 hr
11 to 12 = 1 hr
12 to 1 = 1 hr
total = 3 hours