Find the value of x (please I need help)

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

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

Triangle xyz has vertices x(1,3), y(0,0)