A dugout needs to reach at least 72 feet below ground level. This means it needs to be more than 4 1/2 times its current depth. This depth is represented by the inequality 4 1/2 d < -72, where d is the current depth of the dugout. The current depth of the dugout is area feet below ground level.

Greater than 16

Fewer than 16

Greater than -16

Fewer than -16