Sammy starts her hike at 230 feet below sea level. When she reaches the end of the hike, she is still below sea level at −138 feet. What was the change in elevation from the beginning of Sammy's hike to the end of the hike?

Why can't my rank go i have 1723 points, but my rank is only at ambitious, which is only 250 points! like, (p.s. i know this isn't related to math, but i just don't know why it's doing this and i would really appreciate if someone could tell me whats going on with this)