Answer:
9 is answer . . . . . . . ........
They used 20, 1 quart containers of milk.
It appears that the Pythagorean theorem can be applied to this problem
(distance to shadow)² = (height of building)² + (length of shadow)²
(38 m)² = (height of building)² + (28 m)²
660 m² = (height of building)²
Then the height of the building is
height of building = √660 m ≈ 25.7 m
The for slope for this graph is 1
B, 8 to 11 because general number of marbles is 8+3=11 and only 8 of all are white)