Take your time! No calculators!
-18
-20
-12
-6
-10
11
0
-29
400 feet below sea level
Exactly at sea level
600 feet below sea level
200 feel below sea level
-7
0
-21
-28
Can't tell, because I don't know what she weighed to start with...
Yes - she has still lost 8 pounds.
No - she has gained 23 pounds.
Yes - she has still lost 3 pounds.
+8
-8
+9
+10
8
9
10
11
-2
4
6
-3