Question

Write the formula given the following arithmetic sequences.4, 8, 12, 16, ...

Answer 1

4*n where n increases by one for each consecutive term

Answer 2

i'll give you something harder:
1, 4, 12, 28, 55, 96, 154... what is the next term?

Answer 3

@Khushal_Shah

Answer 4

is it (n3+5)@rrrrr

Answer 5

no

Answer 6

i don't understand

Answer 7

Hint: It has two "layers" of arithmetic and geometric sequences before you can get the answer.

Answer 8

oh, he's not too far off though. So the first time you add 3, then 5, then 8, then 11, then 14, then 17. So lets see...what would the equation be...

Answer 9

so would it be n3+3

Answer 10

1, 2, 3, 4, 5, 6, 7, 8
1, 2, 4, 7, 11, 16, 22, (22+7)
1, 2(2), 3(3), 7(4), 11(5), 16(6), 22(7), (22+7)(8).
Hope this will make it clear.

Answer 11

So the answer is 232.

Answer 12

oh i see now ,but how does this pertain to my problem

Answer 13

sorry i just like to throw out random problems that have something to do with the original problem(like this is sequences)

Answer 14

And I have some harder ones that it took me about 10 minutes to solve(this one took me about a quarter the time)

Answer 15

this one is the only one with 2 "layers" like arithmetic and geometric or even some other strange stuff