Multiple choice

If the nth term of a sequence is 5n2 - 4, find its 2nd term.

  1. 16

  2. 20

  3. 24

  4. 30
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A Correct answer
Explanation

To find the 2nd term, substitute n = 2 into the formula 5n^2 - 4. This gives 5(2^2) - 4 = 5(4) - 4 = 20 - 4 = 16.

AI explanation

To find the second term of the sequence, substitute n = 2 into the given explicit formula 5n^2 - 4. Calculating this gives 5 times 2 squared minus 4, which is 5 times 4 minus 4, resulting in 20 minus 4. The second term evaluates to 16.

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