Posted by **Laura** on Saturday, June 16, 2007 at 8:16am.

Find d of an arithmetic sequence if a(subscript 4)=14 and a (subscript 11)=35

I assume d is the difference between successive terms, since you have said this is an 'arithmetic' sequence. Increasing the subscript by 5 increases the value of the term by 35. That is an increase of 5 per term.