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Mathematics 7 Online
OpenStudy (anonymous):

Paula saves money in an arithmetic sequence: $600 for the first year, another $700 the second, and so on for 20 years. How much does she save all together? (Disregarding interest)

OpenStudy (anonymous):

Formula Sn=n/2(2t1+(n-1)d

OpenStudy (anonymous):

N=20

OpenStudy (anonymous):

t1=600

OpenStudy (anonymous):

d=100

OpenStudy (dan815):

|dw:1367125245380:dw|

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