classify as arithmetic, geometric, or neither. Finally find an explicit formula (rule for the nth term) for each. Designate the first term with
n = 1

Question

classify as arithmetic, geometric, or neither. Finally find an explicit formula (rule for the nth term) for each.  Designate the first term with
 n = 1

anonymous · Answer

attachment

directrix · Answer

For 5B

The common difference is 2b. That is, each term is 2b more than the previous term. So, is the sequence arithmetic or geometric?

anonymous · Answer

@Directrix 
 arithmetic. and its okay-i solved the whole thing.

directrix · Answer

What did you get for the explicit formula?

a sub n = ?

directrix · Answer

a sub n =  2 * ?

anonymous · Answer

common difference,
then nth term formula for arithmitic
@Directrix

directrix · Answer

@secretslocked     Read the thread. The common difference has been established.

We're working on the nth term. A hint appears in this thread.