Answer:
answer A. twaila paid the correct amount for her purchase
Originally, the graph is at 0,0 but in the picture it has been moved down one and right 6 to -1, 6
so that means it's now the square root of x-1 -6
So, they'll ring together again in 120 minutes.
120 min = 2 h
9:45 + 2:00 =
11:45