Answer: -40 - 180
Step-by-step explanation: So we have -40 feet below sea level at 2:15P.M. Notice at 2:16P.M it says 180 feet LOWER. This means if we subtract -40 feet by negative 180 feet, the answer would become -220 feet below sea level. Since we're writing an equation to express the answer, it would be -40 - 180 = -220.
