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Mathematics 15 Online
OpenStudy (anonymous):

A local civic theater has 22 seats in the first row and 21 rows in all. Each successive row contains 3 additional seats. How many seats are in the civic theater?

OpenStudy (anonymous):

22, 25, 28, 31, 34, ...

OpenStudy (anonymous):

thats the no. of seats based on rows

OpenStudy (anonymous):

21st row will have 22 + (20)3 = 82 seats

OpenStudy (anonymous):

22, 25, 28, ... , 82

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