The graph below represents the solution set of which inequality?
-5 4 -3 -2 -1 0 1 2 3 4 5 x
O x² – 2x-8 <0
x² + 2x-8<0
x² – 2x - 8>0
x²+2x–8> 0

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.