Give an explicit formula for each sequence . write the first terms of each sequence

1) an=6n-3. 2)an=n2-

Question

Give an explicit formula for each sequence . write the first terms of each sequence 

1) an=6n-3.         2)an=n2-

anonymous · Answer

What type of sequence is it? Arithmetic or geometric?

anonymous · Answer

Arithmetic sequences

anonymous · Answer

Okay. So there are two methods to arithmetic sequences. The explicit and recursive but we'll be focusing on explicit since that's what they want. Do you know the formula for it?

anonymous · Answer

I think I wouldn't be sure is an-a+(n-1)d

anonymous · Answer

Pretty much. $$a _{n} = a _{1} + (n-1)d$$
Where a1 is the 1st term.
n = position of term
d = common difference
an = desired term of sequence

anonymous · Answer

Is this the only information they gave you?

anonymous · Answer

Hey @steve816 do you think you can help her? I have to go and I don't want the question to remain half-way answered, lol

anonymous · Answer

Yes that's all they gave me .