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Find a formula for the nth term of the arithmetic sequence.

First term 11, common difference 5
Hint: common difference is the coefficient
Hint: the first term = a1 (?)

1 Answer

5 votes

Answer:


a_(n) = 5n + 6

Explanation:

the nth term of an arithmetic sequence is


a_(n) = a₁ + d(n - 1)

where a₁ is the first term and d the common difference

here a₁ = 11 and d = 5 , then


a_(n) = 11 + 5(n - 1) = 11 + 5n - 5 = 5n + 6

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