Question

Can someone help me with a graphing and functions question? It's just one question! Medal for best answer!

Answer 1

Find the third, sixth, and eighth terms of the sequence A(n) = 5 + (n – 1)(–2)
A. 1, –5, –9
B. 1, –5, –11
C. 3, –3, –9
D. 1, –3, –9

I'm not very good with terms of a sequence so if you could also help explain it to me that'd be great!

Answer 2

Ok, I'm not really good at this either, but I'll try to help. Basically what I do is substitute n for one of the answer choices.

Answer 3

Substitute? I don't get how'd that work.

Answer 4

Ok....ignore everything i just said

Answer 5

What you do is instead of n, it's 3, 6, and 8

Answer 6

@O-B-Server

Answer 7

Okay? Well I get that I need to find the 3rd, 6th, and 8th term but it still doesn't make sense.

Answer 8

Solve this: A(3)=5+(3-1)(-2)

Answer 9

Hm... Would the answer be 3?

Answer 10

Nope.

Answer 11

First you would subtract 3-1, which is 2

Answer 12

now you have a(5)=5+2(-2)

Answer 13

solve that

Answer 14

Wait how does the number next to A become a 5?

Answer 15

Oh i'm sorry that was a typo, it's 3

Answer 16

Okay so
5+2=7 so we'd multiply it with -2 right?

Answer 17

its a(3)=5+2(-2)

Answer 18

You would do 2 * -2

Answer 19

Then add 5

Answer 20

But that's what i did. 2 * -2 equals -4 and adding that to five equals 1

Answer 21

Yes that's correct

Answer 22

Then what does the 3 next to the A for?

Answer 23

Now we can eliminate C

Answer 24

Oh 3 next to the a....I'm not sure what it means.

Answer 25

Ah it's fine. Thanks though.

Answer 26

Ok now next do a(6)=5+(6-1)(-2)

Answer 27

Are you still there @O-B-Server