Which of the following relations is a function? I.
{(0, 0), (0, 1), (0, 2)}
II.
{(0, 0), (1, 1), (2,4)}
III.
{(0, 0), (1, 2), (2, 2)}
IV.
{(0, 0), (1, 2), (1,3)}
O (A) I, II, and Ill only
O (B) I and II only
O (C) I and III only
O (D) III and IV only
Someone I need it asa

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.