Quick can you help me with this (Khan)

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

Acomposition of transformations maps δxyz to δx"y"z". the first transformation for this composition is , and the second transformation is a 90° rotation about point x'.

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