Question

Check my answers on a couple questions?
Find an equation for the nth term of the arithmetic sequence.

-20, -16, -12, -8, ...

I think an = -20 + 4(n - 1)

Answer 1

@haleyelizabeth2017

Answer 2

I have no idea....don't think I've done this yet :( sorry!

Answer 3

darn :/

Answer 4

@phi

Answer 5

yes, that looks good.

Answer 6

Thanks, I'm trying to get the other one, but it isn't loading :/

Answer 7

yes, the site sometimes acts up

Answer 8

Here is the other one:
Find the first six terms of the sequence.

a1 = -8, an = 5 * a\(_{n-1}\)

-8, -40, -200, -1000, -5000, -25,000

Answer 9

sleepyjess I agree with your latest answer BUT I recommend you write "-25,000" as "-25000"

I'm tossing out the comma because the commas are being used to separate the other terms. So in a strange way, it kind of looks like the 6th term is -25 and the 7th term is 000. Yeah it's silly, but it's a bit confusing to have the comma being used in two different ways. Also, the computer would most likely find it confusing. If so, then you'd get marked wrong.

Answer 10

That is how they have it in the answer choice, haha ;)

Answer 11

oh then nvm that lol

Answer 12

:P

Answer 13

thanks for looking though :)

Answer 14

sure thing