Question

In an auditorium, there are 21 seats in the first row and 29 seats in the second row. The number of seats in a row continues to increase by 8 with each additional row.

(a) How many seats are in the 3rd,4th, and 5th rows.
(b) Is this an arithmetic or geometric sequence?
(c) How would you find the 100th row?

Answer 1

A. 3rd row= 37 4th row= 45 5th row= 53
B. Geometric
C. Seat in 100th row = 813