Samsons diner sold 80 milkshakes.25% of the milkshake had whipped cream on top. how many milkshakes with whipped cream were sold

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?

What is the probability of rolling a single die greater than 4

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?