Kai wrote the number 85 on the board is 85 prime or composite?

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

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.