Please help This question is on my plato

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?

Answer this 30 points and brainliest!

Negative 5 1/12 + negative 4 1/4 + 6 3/4