Tina,
I agree with you on the purpose of this forum, but there is a fine line between using the wealth of knowledge here and abusing it. Homework is an exercise that should be completed by the individual, not FOR them.
On the other hand, if the parent poster had any ideas he'd like to discuss, I'm more than happy to dust off the old economics texts and offer an opinion, but I'm not inclined to answer homework questions.
I think you'll find many others are much the same. If you'd like some ideas clarified bring them up and I'll be more than happy to contribute.