A theater has 33 seats in the first​ row, 36 seats in the second​ row, 39 seats in the third​ row, and so on. How many seats are there in row 15?

1 answer

To find the number of seats in row 15, we can use the formula for the number of seats in a row n:

Number of seats = 33 + (n-1) * 3

Plugging in n = 15:

Number of seats = 33 + (15-1) * 3
Number of seats = 33 + 14 * 3
Number of seats = 33 + 42
Number of seats = 75

Therefore, there are 75 seats in row 15.