Only would like an explanation on how to get the Answer, I understand how to do it I just want to make sure I'm getting it right. Will Fan and Medal

What is the 17th term of this sequence?
3, 11, 19, 27, 35, ...

Question

Only would like an explanation on how to get the Answer, I understand how to do it I just want to make sure I'm getting it right. Will Fan and Medal

What is the 17th term of this sequence?
3, 11, 19, 27, 35, ...

anonymous · Answer

The answer I got was 130 and 136.

anonymous · Answer

@Miracrown

anonymous · Answer

@abb0t

anonymous · Answer

how did you get two answers?

anonymous · Answer

Well, the first one I counted it all out and got 130. The second one I took 6*17 and got 136.

anonymous · Answer

You probably counted wrong the first time, and I'm not sure where the 6 came from. Either way there's a formula for this.

$$a_n=a_1+d(n-1)$$
a_1 is the first term of the sequence
d is the difference between each term (for example 11-3)
n is the term your looking for. You're looking for a_17, so n = 17

Try it out

anonymous · Answer

I got 96?

anonymous · Answer

No. can you show me your formula so I can see where you're going wrong?

anonymous · Answer

That's how it would look right?

anonymous · Answer

Oops.

anonymous · Answer

$$a _{n}=a _{1}+6(17-1)$$

anonymous · Answer

Two mistakes. 
a_1 is the first term of your sequence, which is 3.
Also, you're using the wrong common difference. The pattern is adding 8, not 6. So d = 8

anonymous · Answer

Oh! Sorry, I side looked that. Let me try again

anonymous · Answer

ok. no problem

anonymous · Answer

128 is the answer I got.

anonymous · Answer

did you remember to add the 3 from a_1?

anonymous · Answer

Yes, I did :)

anonymous · Answer

Check your work to this
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