In science class, Jada uses a graduated cylinder with water in it to measure the volume of some marbles. After dropping in 4 marbles so they are all under water,
the water in the cylinder is at a height of 10 milliliters. After dropping in 6 marbles
so they are all under water, the water in the cylinder is at a height of 11 milliliters.

b. How much water was in the cylinder before any marbles were dropped
in?
C. What should be the height of the water after 13 marbles are dropped
in?
d. Is the volume of water a linear relationship with the number of marbles
dropped in the graduated cylinder? If so, what does the slope of the
line mean? If not, explain your reasoning.