Question

Which function describes the arithmetic sequence shown?
17, 13, 19, 25, 31,

Answer 1

Explanation:

The number by which every pair of adjacent numbers here differs is called the "common difference." The difference between 19 and 25 is 6.

The formula for this arithmetic sequence is a(n) = a(0) + (n-1)d, where a(0) is the first term and d is the common difference.

Here the first term is 17 and the common difference is 6.

Therefore, a(n) = 17 + 6(n-1)

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