Question

Write a rule for the sequence.(1 point)
3,-3,-9,-15,. . .
(A)Start with 3 and add -6 repeatedly.
(B)Start with -6 and add 3 repeatedly
(C)Start with 3 and add 6 repeatedly
(D)Start with 3 and subtract -6 repeatedly

Answer 1

what is the first number for the sequence?

Answer 2

A confederate flag? really? is that racist or what?

Answer 3

no its not racist-_- and the answer to that is (C)

Answer 4

am i correct

Answer 5

you started with the number 3
your next term is -3
next term is -9
then next is -15

how do you get from 3 to -3
how do you get from -3 to -9

Answer 6

idk im confused and i got the answer it was (C) and thxs i will medal

Answer 7

you have 3 as your first number

you want to get from 3 to -3

at this point it is either multiply by -1, or you add -6
so we look at the next term

next term is -9
to get from -3 to -9 we either multiply by 3 or add -6

so the only thing in common is adding -6

therefore you start with 3 and add -6

Answer 8

thank you

Answer 9

the real way to do it

Answer 10

arithmetic sequence is this

a, a+d, a+2d, a+3d...

so to work out if there is a common difference you would do

2nd term subtract the first term
3rd term subtract the second term
4th term subtract the third term
which gives

a+d - a= d
a + 2d- a+d= d
etc
in this case

-3 - 3=-6
-9--3=-6
-15--9=-6

this gives the difference of -6

Answer 11

thxs

Answer 12

for a geometric series you have

\[a, ar, ar^{2}...ar^{n-1}\]

and you would do

2nd term divided by first term
3rd term divided by second term
4th term divided by third term

to work out the common ratio

if they are the same answer it would be geometric

Answer 13

okay okay i understand take a breath thank you;)