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Mathematics, 07.05.2021 21:40 knowingwhat

A theater has 56 rows of seats. If there are 13 seats in the 1st row, 17 in the 2nd, 21 in the 3rd, and so on, how many total seats
are there in all? Need work

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A theater has 56 rows of seats. If there are 13 seats in the 1st row, 17 in the 2nd, 21 in the 3rd...
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