## Quiz 9 :

Sequences, Series, and Probability

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Find a quadratic model for the sequence with the indicated terms.

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C

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The first two terms of the arithmetic sequence are given. Find the indicated term.

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C

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Determine whether the sequence is geometric. If so, find the common ratio. 3, -1, -5, -9,...

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Answer:

A

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Determine whether the sequence is arithmetic. If so, find the common difference. 5, 25, 125, 625, 3125

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Write the first five terms of the sequence defined recursively. Use the pattern to write the nth term of the sequence as a function of n. (Assume that n begins with 1.)

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Determine whether the sequence is arithmetic. If so, find the common difference. 3, 1, -1, -3, -5

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Write an expression for the apparent nth term of the sequence. (Assume that n begins with 1.) 1, 6, 11, 16, 21

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Find the indicated nth partial sum of the arithmetic sequence. -2.1, 2.5, 7.1, 11.7, ...., n=90

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Write the first five terms of the sequence. (Assume that n begins with 1.)

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