I just created a new math site ( math20.com ) and I really don't have a business model yet. I was thinking advertising, charging for my service, or a combination of the two. Any help will be appreciated!
Who is your target market? What are you offering on your site that sucks me in and convinces me to pay money for your help. How do I know you can do what you claim you can do? What happens if you solve a problem for me but do it in a way my instructor hasn't shown us yet? Looking at the types of problems you're offering it would seem to be targeted at high school students. I don't know how many of them would have the money or means to pay for your service.
I'm curious as to why you're offering this service. I mean, the students aren't going to learn much if you're solving the problems for them, and do you really enjoy math so much that you want to provide this service for free? Okay, so you want to monetize it, but was that your plan from the beginning?
"Who is your target market?" This is the main Idea!. Get who are your Target and then continue next steps