Multiple choice

The nth term of a sequence is given by the expression 2n + 7. What are the first 3 terms of the sequence?

  1. 6, 11, 14

  2. 9, 12, 14

  3. 9, 11, 13

  4. 6, 8, 10

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C Correct answer
Explanation

For n=1, 2(1)+7 = 9. For n=2, 2(2)+7 = 11. For n=3, 2(3)+7 = 13.

AI explanation

To find the first 3 terms of the sequence, substitute n = 1, n = 2, and n = 3 into the expression 2n + 7. For n = 1, the term is 2(1) + 7 = 9; for n = 2, the term is 2(2) + 7 = 11. For n = 3, the term is 2(3) + 7 = 13, making the first three terms 9, 11, 13.