Hello There!
Your answers would be #1 and #3
If Earl jogged 5 yards forward and then jogs 9 yards back, we are subtracting 9 from 5 and we get a difference of -4. This is because he jogged backward from his position after 5 yards.
If Clarissa had $49 in her checking account, we subtract $53 because she bought a pair of shoes so we get a difference of also -4