Which ratio is equivalent to 3/20

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?

How do you summarize data in a two-way frequency table?

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9