ok?This one is really racking my brain..

The cost of manufacturing x home theatre systems per week is given by

C(x)=415x + 5200

A) Determine the fixed cost and the unit (cost per item) cost.

I think fixed cost is 5200. How do I find cost per item?

that would be the 415

B) Determine the cost of producing 700 systems per week.

415(700) + 5200

Determine how many systems were produced of the production cost for one week was $230,130.

415x + 5200 = 230130

solve for x