If you travel east from 125 degrees west to 55 degrees east along the equator, how far will u travel in degrees

180°

Explanation:

You are starting at 125° W and ending at 55° E.

It might be easier to find the distance travelled by using a number line.

Numbers west are negative and numbers east are positive.

Start at -125 and go in jumps of 10 until you reach +55.

You make 18 jumps of 10° each for a total of 180°.

You have travelled a distance of 180°.

What you have just done is equivalent to saying:

distance travelled = end - start = 55° - (-125°) = 55° + 125° = 180°  

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.