. When two musical notes are a “fourth” apart, the frequency of the lower note is the frequency of the higher note. Using f as the frequency of the higher note, write an expression for the frequency of the lower note

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?

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?