Amountain's peak is 880 m above sea level while the valley is 139 m below sea level. what is the elevation drop between the top of the mountain and the bottom of the valley?

Let

x--------->the top of the mountain above sea level

y--------> the bottom of the valley below sea level

z-------> the elevation drop between the top of the mountain and the bottom of the valley

we know that

in this problem we have

substitute in the formula above

therefore

the answer is

the elevation drop between the top of the mountain and the bottom of the valley is

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.