Answer:
3875 feet above sea level
Step-by-step explanation: First, you would subtract 4,500 from 7,000 because you're going down. Then, since you're going up, you would add 1,375.
7,000- 4,500 = 2,500
2,500+ 1,375 = 3875
Step-by-step explanation:
C , looks like the right answer, and probably this is too late to help... :/ sorry
If you are solving the equation for x :
3x + 3y = 180
3x = -3y + 180
x = -y + 60 or x = 60 - y
If you are solving the equation for y:
3y = -3x + 180
y = -x + 60 or y = 60 - x