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Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?