Answer:
Let p be the the elevation of a passage in meters
An inequality that represents elevations below -8 meters is
p less than -8 meters. Mathematically,

<h3><u>p<-8</u> is the right answer.</h3>
Solution:
<u>We know that:</u>
Step by step calculations:
1. <u>Substitute the angles in the equation "∠A + ∠B + ∠C = 180" to find ∠C:</u>
2. <u>Substitute ∠C in the equation "∠C + n = 180" to find n:</u>
I will give you an amazing answer if you take a better pic but right now I cant see anything but the boxes with xs on them