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Mathematics 11 Online
tyesgirl:

what is explicit formula for this sequence -7, -3, 1, 5 ?

snowflake0531:

Do you see how in this example, it starts out as 3, and adds each time? That's how it becomes 3 + 2(n-1)

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snowflake0531:

So do the same for your question, it starts out at -7 and adds 4 each time

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