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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?

If you could answer these your a life saver

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?