Help me fast ( prove it) class 8

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 graph shows a function with a range of all real numbers greater than or equal to -1

What’s -11-33k and factor each expression completely