Question 391704
<pre><font size = 4 color = "indigo" face = "batangche"><b>
 1,  2,  3,  4,  5 
11, 18, 25, 32, 39

This is an arithmetic sequence with common difference 7

{{{a[n]=a[1]+ (n-1)d}}}

{{{a[n]=11 + (n-1)7}}}

{{{a[n]=11 + 7(n-1)}}}

{{{a[n]=11 + 7n - 7}}}

{{{a[n]=7n+4}}}

Edwin</pre>