What is x over 12+3< or equal to 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

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries. what fraction of kathy’s money was left?

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)