Question

8. Nu started at sea level, climbed up a mountain for 350 feet and then descended 487 feet into a valley. What is Nu's new elevation (in feet above sea level)?​

Answer 1

-137 Feet

Explanation:

Look at the problem like this:

/\

/ \

/ \

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\ /

\ /

The triangle above the line represents the mountain. The line represents sea level and the lines under the sea level represents the valley.

Nu climbed 350ft up the Mt.

Then she came 487ft down the mountain to a valley below sea level.

The equation is:

350ft (how much she climbed up the Mt)-487ft (how much she climbed down the Mt)=-137ft