the diagram shows a door lock. the code is a letter followed by a number. how many different codes are there altogether

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?

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265