If you or someone you know may have a mental disorder, it's important to discuss this concern with a trusted adult.

Depending on the mental disorder. most mental disorders are from birth or develop as a child and is already known by a doctor. if you fell that they might be of harm to themselves or society then yes it is very important that you discuss your concern with a trusted adult

It will basically depend of what type of mental disorder they may have.

This is a pretty on point question because all we need to do is replace 's' in the equation with '35'.the calculation will be9.95 + 0.30s = c9.95 + 0.30 (35) = c9.95 + 10.5  = cc = 20.45