Can you help me on question 12?!

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

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?