Lisa descended 120 feet into a cave. She then climbed up 56 feet. If her starting point was 38 feet below sea level at the mouth of the cave, what is Lisa's elevation relative to sea level now?
-102
-64
To determine Lisa's elevation relative to sea level now, we need to calculate the net change in her position.
Given:
- Lisa descended 120 feet into the cave.
- She climbed up 56 feet.
- Her starting point was 38 feet below sea level.
First, let's calculate the total distance Lisa went below sea level:
Starting point: -38 feet
Descent into the cave: -120 feet
Total descent = -38 feet + (-120 feet) = -158 feet
Next, let's calculate the total distance Lisa climbed up:
Climb up: +56 feet
To determine Lisa's elevation relative to sea level, we need to sum up the total descent and the climb up:
Elevation relative to sea level = Total descent + Climb up
Elevation relative to sea level = -158 feet + 56 feet
Elevation relative to sea level = -102 feet
Therefore, Lisa's elevation relative to sea level is now at -102 feet.