She could create 6 rows with 6 columns to display the cups.
4) 2 1/4 - 1 2/3
8/4 - 5/3
24/12 - 20/12= 4/12
simplify: 1/3
5) 2.951+2.3+1.24= 6.491
B the highest point is at three points 3,1 and as the graph has no higher value of point it is a maximum therefore B