Question

next please: find the 1st, 4th and 10th terms of the arithmetic sequence described by the given rule: A(n)=12+(n-1)(3)

Answer 1

I'm going to try and learn arithmetic sequences on my own, 7th grade doesn't have that.

Answer 2

I thought you just substitute n with 1,4 and 10 to find your answer

Answer 3

For 1
12+(1-1)(3)= 12

For 4
12+ (4-1)(3) = 21

For 10
12+ (10-1) (3) = 39

Answer 4

how did you get the 1 4 and 10

Answer 5

1st term 4th term and 10th term

Answer 6

oh duh i am so dumb!so all i need to do is substitute it to the n's. OMG so embarrassing. thank you so much.

Answer 7

No problem. =) I always forget stuff like that too haha

Answer 8

thats how you do that? wow that is actually a simple thing, never done it before though.