Please help me I need help

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?

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Find the commission on a $590.00 sale if the commission is 15%.