Negotiating pay with potential employers.?

[eadweald71]

I am going to be 19 when I finis high school and I will be turning 18 in april, and I want a job! However; my mother is on social security and gets a check for having custody of me. And I am allowed to work however a limit on yearly earnings. Although I don't get any of the money she gets which I don't feel is fair. BTW. Either way, I wanna be able to earn just under the MAX that I am allowed to earn without anything happening to the check she gets. And I figure 40 hours at 7.25 an hour weekly would come just under that! Although I wouldn't earn much either way, any where I work considering I am still in school. I won't be under the labor law anymore. And I want to seem more appealing to employers in the sense that I could be a full time employee rather than only able to work for example 32 hours a week at a slightly higher rate. Would they allow you to request a lower wage and still take you? Or do they put out what they are gonna pay and thats what they go for? Or how does that work? It;s a complicated situation.