Which expression(s) have a greatest common factor (GCF) of 3xy2 with 42xy4? Select all that apply.
A. 6x2y2
B. 15xy2z
C. 27x3y2
D. 9xy3

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?

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle