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OpenStudy (anonymous):
HHEELLPP !! !! !! What is the function for the arithmetic sequence 2, 7, 12, 17, 22, . . . . . ? A) A(n)=5+(n-1)(2) B) A(n)=2+(n-1)(6) C) A(n)=5x6 D) A(n)=2+(n-1)(5)
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OpenStudy (anonymous):
D
OpenStudy (anonymous):
u sure ?
OpenStudy (anonymous):
Plug in A(1) into each choice,
OpenStudy (anonymous):
a=2 c.d. d=7-2=5 \[A(n)=a+(n-1)d\]
OpenStudy (anonymous):
if a(1) = 2 and a(2) = 7 ... and so on then thats your answer
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OpenStudy (anonymous):
so D ?
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