@CPhill Thanks a lot for all the other help! =) I really appriciate it!

@CPhill The question is correct, but apperntly my teacher said there is a trick. He won't tell us though. It'd be great of you could figure out the seconf part. Thank you for helping me with the irst though!

@geno3141 I tried graphing it but the graph is on the negative side which is pretty much impossible. I'm really stuck and don't know what to do :(