hello,
please rely on my programming languages / Haskell knowledge and experience.
the first problem solution would be:
f3 x y = abc * z
where
abc = x + y
z = abc + 2
i've found the course on its uni website. everything is adjusted to it. 5 days are set for all to be checked and sent forth and back. comments will be detailed enough i hope, but you are free to ask whatever you need, i'll try to be instructive as much as i can.
i'll start working when you put the milestone up, and accept the project within 24 hours from that.
cheers, srdjan