Answer:
[tex]\boxed {\boxed {\sf v=28 \ mL}}[/tex]
Explanation:
Jason found the volume of the marble using water displacement.
To calculate the volume, we must subtract the initial volume from the final volume.
[tex]v_f-v_i[/tex]
The initial or original volume is 50 milliliters.
The final volume, after the marble is added to the water, is 78 milliliters.
[tex]v_f=78 \ mL\\v_i=50 \ mL[/tex]
Substitute the values into the formula and subtract.
[tex]78 \ mL-50 \ mL[/tex]
[tex]28 \ mL[/tex]
The volume of the marble is 28 milliliters.
