Question

The nth term of a sequence is n^2 + 20. What are the first three terms of the sequence? 1) 21 2) 24 3) 29

Answer 1

21 , 24 , 29

Explanation:

To find the first three terms in the sequence, substitute n = 1, 2, 3 into the nth term formula.

n² + 20

n = 1 : 1² + 20 = 1 + 20 = 21

n = 2 : 2² + 20 = 4 + 20 = 24

n = 3 : 3² + 20 = 9 + 20 = 29

the first three terms are : 21 , 24 , 29