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Mathematics 15 Online
OpenStudy (anonymous):

Find the sum of the first 9 terms of the sequence. Show all work for full credit. 2, -7, -16, -25, ...

OpenStudy (pinksapphire):

What is the common difference?

OpenStudy (anonymous):

@PinkSapphire i dont know

OpenStudy (pinksapphire):

Okay...

OpenStudy (pinksapphire):

What do you have to do to get from 2 to -7?

OpenStudy (pinksapphire):

The common difference is -9...|dw:1400019148009:dw|

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