Multiple choice

Find the nth term of the given sequence. - 1, 0, 3, 8, 15…

  1. n2 + 2n

  2. n2 - 2n

  3. n2 - 3n

  4. n2 + 3n
Reveal answer Fill a bubble to check yourself
B Correct answer
AI explanation

Substitute the first few natural numbers for n into option B to test the formula. You get (1)2 - 2(1) = -1, (2)2 - 2(2) = 0, (3)2 - 2(3) = 3, and (4)2 - 2(4) = 8. Because these calculations produce the exact numbers in the sequence, the nth term is n2 - 2n.

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