what would the sequence be 1, 4.5, 8, 11.5, 15

neither
A) arithmetic
B) geometric

Question

what would the sequence be 1, 4.5, 8, 11.5, 15 

                neither
		A) arithmetic
		B) geometric

parthkohli · Answer

What do you think?

asnaseer · Answer

do you know what an arithmetic and a geometric series is?

anonymous · Answer

no

parthkohli · Answer

Whoops! A lot to teach ya!

asnaseer · Answer

Then maybe this would help first: http://www.mathsisfun.com/algebra/sequences-series.html

asnaseer · Answer

have a look at that site and try to learn those concepts first.
If you are still stuck afterwards then post a reply here and we will try and help you further.

parthkohli · Answer

In general terms, we have an arithmetic sequence if we are adding the same number again and again:$$\{2,4,6,8,10,12,14,16\cdots \} $$Here, we are adding 2 again and again.
2 is also known as the common difference of this arithmetic sequence.

parthkohli · Answer

Similarly, in a geometric sequence, we multiply a same number again and again.$$\{2,4,8,16,32,64,128,256\cdots \} $$Here, we are multiplying 2 again and again(which is also known as the common ratio).

parthkohli · Answer

Now, think if you are adding or multiplying a same number again and again.

anonymous · Answer

it is arithemtic because we are adding 3.5 each time

anonymous · Answer

bingo! good job!