GED online math help?

The local GED classes offered close to home, Aren't giving me enough instruction.... I have to be able to have a person there to explain things I don't understand... They gave me the plato-web.com site to use to study, I've hit a rock... I can't figure out this problem with my math.... Anyone know any good sites for help? That are cheap??? I'm pregnant, and i want to get life in track before I have the baby. Any help would be great! I only need help in math, I passed everything else.