A parabola opens to the left. Which could be the equation of the parabola? (x-4)2 = 4(y + 3)
(x - 4)2 = -4(y + 3)
OU - 4)2 = 4(x + 3)
(-4)2 = 4(x + 3)

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.