Question

Nadia is mountain climbing. She started at an altitude of 19.26 feet below sea level and then changed her altitude by climbing a total of 5,437.8 feet up from her initial position. What was Nadia’s altitude at the end of her climb?

Answer 1

by convention, below sea level is represented by negative numbers

so 19.26 feet below sea level ---> would be represented as -19.26
from there, since she climbed 5,437.8 feet up, simply add 5,437 to the previous altitude