Question

Find the first four terms of the sequence represented by the expression 15 + 4n + 1.
19; 79; 1,039; 16,399
31; 79; 271; 1,039
23, 27, 31, 35
none of these

Answer 1

If n starts from (0,1,2 or 3)

Assuming stats from 0

15+1=16

Assuming n starts from 1

15+4+1=20

What do you think?

Answer 2

Maybe you mean 15 + 4(n+1)???
that would be 15 + 4 n + 4 = 19 + 4 n
if n = 1 it is 23
if n = 2 it is 27
if n = 3 it is 31
if n = 4 it is 35