Number 7 pls im dead 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?

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi