Somebody help me with this

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 shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Determine the third angle of a right triangle if in of the angles measures 24°. i need .