For an arithmetic sequence with a1 = 10 and d = 2, what is the 5th term?

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Multiple Choice

For an arithmetic sequence with a1 = 10 and d = 2, what is the 5th term?

Explanation:
In an arithmetic sequence, each term goes up by the same amount, called the common difference. The nth term is a_n = a1 + (n-1)d. Here a1 = 10 and d = 2, so the fifth term is a5 = 10 + (5-1)·2 = 10 + 8 = 18. The sequence progresses 10, 12, 14, 16, 18, confirming the fifth term is 18.

In an arithmetic sequence, each term goes up by the same amount, called the common difference. The nth term is a_n = a1 + (n-1)d. Here a1 = 10 and d = 2, so the fifth term is a5 = 10 + (5-1)·2 = 10 + 8 = 18. The sequence progresses 10, 12, 14, 16, 18, confirming the fifth term is 18.

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