how how how??

I think i can do it but then again.. if i can't i'm screwed...
I NEED TO 100% confident that i can do it! >.< but I can't because I'm not

Well something did cheer me up a while ago...
I managed to solve the Tax Vlookup question on the practice set...
woot!

but then again.. what if i cannot do it manually... sigh... :(

stress