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Mathematics 7 Online
OpenStudy (anonymous):

Find the sum of the summation of 2 i minus 12, from i equals 7 to 16. 22 110 220 440

jimthompson5910 (jim_thompson5910):

make a 2 column table (with i in the first column, and 2i-12 in the second) |dw:1400386693375:dw|

jimthompson5910 (jim_thompson5910):

the i column should go from 7 to 16, but I ran out of room

jimthompson5910 (jim_thompson5910):

when i = 7, what is 2i - 12 ?

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