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anonymous
 one year ago
I have no clue what to do? The first four terms of a sequence are shown below:
7, 4, 1, 2
Which of the following functions best defines this sequence?
anonymous
 one year ago
I have no clue what to do? The first four terms of a sequence are shown below: 7, 4, 1, 2 Which of the following functions best defines this sequence?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This is an arithmetic sequence because every term is 3 less than the one before it. The formula for any term of an arithmetic sequence is \[a_n=a_1+d(n1)\] a1 is the first term (7) and d is 3 because the pattern is subtracting 3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Plug in for a1 and d, then simplify

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but were did you get 3 from? and what about 4, 1 , and 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434762668634:dw
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