How much financial aid will I recieve about?? (ten points)?

If my parents are divorced, and I live with my mom. My mom has two children, who are both in high school. My mom's income is about 30,000. If I want to go to college that costs about $25,000 with tuition, board, room, and other fees, will I get enough scholarships/grants to cover the whole cost without loans? I also have about a 3.9 GPA, if that matters. Also, what if I apply for a job in high school and make a $7,000 income. Do I have to list that on my form? Does my income affect the amount?