There are a million places to find assistance online. It is your responsibility to weed out the sites that are suspect. There are a few things you need to investigate. If you find the answers to the following questions, you are going to whittle down those sites to a handful of good ones. Then you can consider the least expensive and hopefully get the homework help you can depend on.
The sites that give you satisfactory answers to these questions will be the ones you will want to work with. There are some other things you need to consider also:
Online is a great way to receive help on the internet. It is your responsibility to use all that knowledge in a beneficial way and a moral way. That is up to you.