Mar 2021 Exam
The first row of seats of the center orchestra aisle in a New York City theatre has 11 seats, the second row has 13 seats, the third row has
15 seats, etc. Write the appropriate sequence equation to determine the number of seats in any row, then find the number of seats in the
10th row.
an = a, + (n - 1)(d)
O a10 = a1 + (n - 1)(2): 29 seats in the 10th row
O a10 = a1 + (n - 1)(2): 17 seats in the 10th row
O a11 = a1 + (n - 1)(3) 37 seats in the 10th row
o'ai = a1 + (n - 1)(1): 19 seats in the 10th row ?