Basic solution. Help please!!

Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 in

Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?

Let r = 3. what is the value of r + 58?