My response shouldn't be marked incorrect if my keyboard doesn't have "the pound" symbol

Bonjour Milan,
So does you statement reference this symbol # or is it referring to the British Pound Sterling?

If it is the latter, you might want to try this ALT code:
for £ British Pound 0163 Hold down the ALT button while typing 0163 should give you this: £

Thanks! Those ASCII codes are easy to forget.