Which rule describes the composition of transformations that maps triangle ABC to triangle A"B"C"?
A) Ro, 90°• rx-axis(x, y)
B) rx-axis • Ro, 90° (x, y)
C) Ro 180°• rx -axis(x, y)
D) rx-axis • Ro, 180°(x, y)

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.