well first it would help if I knew how to type the math equation so if you can answer that it will help me in the future.. Here is the question.

daily revenue: R(x)=x^2-18

Daily Cost: C(x)=75+4x

How many items must be made and sold daily in order to break even.

I'm not sure what to do with this problem so any help to steer me in the correct direction is appreciated.

Thank you for your consideration.