2x (x-y)+y(2x-y) tại x=2 và y= -2

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?

Write a corresponding real world problem to represent 2x - 125=400

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.