West Moreland is -157 ( below sea level would be a negative value)
Dallas is 430 above
-157 to sea level is 157 feet
Sea level to 430 is 430 feet
Total distance = 157 + 430 = 587 feet.
Answer:
587 feet
Westmoreland is 157 feet below the sea level.
This is a negative number, so add 157 to get to 0.
Dallas is 430 above sea level.
Add 430 and 157. You get 587.
Hope it helps!