Question

What are the first five terms of the sequence given by the formula an = 5n + 1?

1, 5, 9, 13, 17
6, 11, 16, 21, 26
5, 10, 15, 20, 25
5, 6, 7, 8, 9

Answer 1

an = 5n + 1
for x=1 then a1 = 5(1) + 1 = 5 + 1 = 6
for x=2 then a2 = 5(2) + 1 = 10 + 1 = 11
so on ....