A deep-sea diver descends below the surface of the water at a rate of 12 inches per second. What is the depth of the diver after 6 seconds?

Pls! does anybody know a shortcut for answering these types of questions in the future?

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Factor the monomial completely 42a3b3