Which of these is the algebraic expression for "5 less than 4 times some number?" (1 O a 5- 4y 4-5y Ос 5y - 4 o a 4y - 5

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?

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

Can someone me with this problem . show your work .