solving for systems: {y=3x+7 & y=5x-7

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15

Which statement about perfect cubes is true

Find the area of the triangle shown 3 by 6