precalculus

The first row of seating in section A of an arena has 7 seats. There are 25 rows in section A, each row containing two more seats than the row preceeding it. How many seats are in section A?

How do you use geometric sequence to solve it?

  1. 👍
  2. 👎
  3. 👁
  1. the sequence is not geometric, but arithmetic.
    a=7
    d=2
    S25 = 25/2 (2*7+24*2)

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math (arithmetic)

    The total seating capacity of an auditorium is 1,065. The first row has 21 seats arithmetic series and each row has one seat more than the row in front of it. How many rows of seats are there in the auditorium?

  2. Algebra

    A rectangular auditorium seats 1960 people. The number of seats in each row exceeds the number of rows by 9. Find the number of seats in each row. Thanks!

  3. math

    Cinema 2 has 25 seats in the first row and 30 rows in all. Each successive row contains one additional seat. How many seats are in the theater

  4. Math

    an auditorium has 50 rows of seats. THe first row has 20 seats, the row has 21 seats, the third row has 22 seats, and so on. each row having one more seat than the previous row. How many seats are there all together?

  1. Math

    An auditorium has 50 rows of seats. The first row has 20 seats, the second row has 21, the third row has 22 seats, and so on, each row having one more seat than the previous row. How many seats are there all together? a. write 2

  2. Math

    The first row of a concert hall has 25 seats and each row after the first has one more seat than the row before it. There are 2 rows of seat. 1)Write a rule for the number of seats in the nth row. 2)35 students from a class want

  3. CIS 115

    There are three seating categories at a stadium. For a softball game, Class A # seats cost $15, Class B cost $12. and Class C seats cost $9. Design a modular # program that asks how many tickets for each class of seats were sold,

  4. math help!

    a hockey arena has a total seating capacity of 15690.the first row of seats around the rink has 262 seats. the number of seats in each subsequent row increases by 18. how many rows of seats are in the arena?

  1. MAth

    The front row of a stadium has 25 seats. Each of the other rows has two more seats than the row in front of it. how many seats are there altogether in the first 20 rows? i know how to do this in the "long" way but how do you do

  2. mathematics

    SM cinema has 24 seats in the 1st row, and each of the succeeding rows has 2 more seats than the row before it. If there are 16 rows of seats, what is its seating capacity?

  3. Math

    An auditorium has 30 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seats are in the auditorium My answer is 1170 but the way I figured out the problem was by listing numbers

  4. college algebra

    A rectangular auditorium seats 1920 people. The number of seats in each row exceeds the number of rows by 8. Find the number of seats in each row.

You can view more similar questions or ask a new question.