Solve please 1/4x = 1/2x+6

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 solve a question like this?

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?