Question

Find the common differece of the sequence: 2,9,16,23

Answer 1

The sequence is increasing by 7 each time.

Answer 2

So if 2 is the first term then if n=1 then n+1=sequence so far but

second term is 9 so if n=2 then the 2nd term=9
you must use trial and error to find
so it is
7n-5 so if n=1 then
7(1)-5=7-5=2

if n=2 then
7(2)-5=14-5=9
sucess

the equation is 7n-5