Question

Find the 10th and 21st terms of -3,1,5,9

Answer 1

The 10th Term is; 33.

The 21st Term is; 77

Explanation:

You need to add 4 each time to get a term. The first term is -3 so -3+4=1. Then 1+4=5, and 5+4=9 and so on.

-3. 1 5 9 13 17 21 25 29 33 37 41 45 49 53 57 61 65 69 73 77

Answer 2

33, 77

Explanation:

-3. 1 5 9 13 17 21 25 29 33 37 41 45 49 53 57 61 65 69 73 77