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"sqared sign"176

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

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2