0, 3, 8, generalize the pattern by finding the nth term.
a. n2/n
b.2n - 2
c. n2 - 1
d. n3 - 5

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.