There are 325 seventh graders in 12 classes. Determine the unit rate

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.