Which of the following choices is the simple formula for the nth term of the following arithmetic sequence?
7, 3, -1, -5, -9, ...
A.5n + 4
B.4n + 1
C.-4n + 11
D.4n + 11
E.-4n + 1
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OpenStudy (anonymous):
@Robert136
OpenStudy (anonymous):
@Robert136
OpenStudy (anonymous):
help rob
OpenStudy (anonymous):
Notice that the intervals are all the same.
OpenStudy (anonymous):
As well as that the sequence leads to gradual decrease with an interval of 4.
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OpenStudy (anonymous):
so its not a or b
OpenStudy (anonymous):
Therefore you can disregard ABD
OpenStudy (anonymous):
Therefore C or D
OpenStudy (anonymous):
Let's say n=1. Plug the number into both equations and see if you get the right one. .
OpenStudy (anonymous):
ok so its d
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OpenStudy (anonymous):
no
OpenStudy (anonymous):
I am not supposed to give you just the answer but since -4+11=7. It naturally falls upon you to pick C
OpenStudy (anonymous):
Now don't snitch on me.
OpenStudy (anonymous):
o but guess what somebody did
OpenStudy (anonymous):
ill send you they message i got
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OpenStudy (anonymous):
i know
OpenStudy (anonymous):
the
OpenStudy (anonymous):
o ok
OpenStudy (anonymous):
the moderator
OpenStudy (anonymous):
yep
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