Aplane travels south for 120 km. the plane then travels north for 45 km.

if north is taken as the positive direction, what is the displacement of the plane?

What are the solutions to the equation 4x2+3x=24-x

Which region represents the solution to the given system of inequalities? |-0.5x+y23 | 1.5x+ys-1 5 4 -3 -2 -1 1 2 3 4

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano