If the interior angle of a polygon is 170 degrees , can it be a regular polygon? Why or why not?

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?

Solve 3x-18=2y and 5x-6y=6 by elimination show work

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)