Fan & Medal --- 2. Which sequences are arithmetic?

Choose all answers that are correct.

Picture of answers:
http://i.gyazo.com/0d19dcd06cfdd37303d3de15c5c31c8f.png

Question

Fan & Medal --- 2. Which sequences are arithmetic?

Choose all answers that are correct. 

Picture of answers:
http://i.gyazo.com/0d19dcd06cfdd37303d3de15c5c31c8f.png

godlovesme · Answer

arithmetic sequence is when u have common difference between the #s 
can u take a guess first? :) @haileyalexander

anonymous · Answer

@Godlovesme C & D are my guesses.

godlovesme · Answer

c is right but if u look at d it adds 20 the 1st time then 60 ....got it?

anonymous · Answer

ooooh, so the difference has to be constant? @Godlovesme

godlovesme · Answer

yes :D do u c any more

anonymous · Answer

yes! @Godlovesme A looks like its added by 2.

godlovesme · Answer

umm...lets c |dw:1418922703377:dw|