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please answer the following questions: Q9. The nth term of a sequence is un. The sequence is defined by Un + 1 = punt q

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please answer the following questions:

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Q9. The nth term of a sequence is un. The sequence is defined by Un + 1 = punt q where p and q are constants. The first three terms of the sequence are given by: u1 = 200 u2 = 150 u3 = 120 (a) Show that p = 0.6 and find the value of q. (5) (b) Find the value of u4. (1) (Total 6 marks)

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