Question

A section in a stadium has 20 seats in the first row, 23 seats in the second row, increasing by 3 seats each row for a total of 38 rows. How many seats are in this section of the stadium?



Please explain using words, numbers, and formulas.
Recall that Sn = n/2 (2a+(n-1)d)
2869 seats

Heh 69

Related Questions

The first 40 rows of seating in a certain section of a stadium have 25 seats, 28 seats, 31 seats, an... A stadium has 53,000 seats. Seats sell for $28 in Section A, $16 in Section B, and $12 in Section C.... The first row of a section in a stadium has 10 seats. The second row has 11 seats. The third row has...