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consider the graph of f(x) = x3 -3x2 + 2x - 6
what is the real solution of f(x) based on the graph? verify algebraically that your answer is a zero of f(x).

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.