May be its just me but i think the simplest is the best: tell 'em that u know u screwed up but u are asking 4 a 2nd chance and u will be responsible now.
good luck :)
Bending my thumbs
you cant bend thumbs
because you will just hurt yourself
147/100
Since it is a percentage, it is out of 100 and you cannot simplify this any further so it stays as it is.
This should be under Mathematics, not World Languages.