The numbers of seats in the first 12 rows of a high-school auditorium form an arithmetic sequence. The first row has 9 seats. The second row has 11 seats. a. Write a recursive formula to represent the sequence. b. Write an explicit formula to represent the sequence. c. How many seats are in the 12th row?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
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The numbers of seats in the first 12 rows of a high-school auditorium form an arithmetic sequence. The
first row has 9 seats. The second row has 11 seats.
a. Write a recursive formula to represent the sequence.
b. Write an explicit formula to represent the sequence.
c. How many seats are in the 12th row?
Transcribed Image Text:The numbers of seats in the first 12 rows of a high-school auditorium form an arithmetic sequence. The first row has 9 seats. The second row has 11 seats. a. Write a recursive formula to represent the sequence. b. Write an explicit formula to represent the sequence. c. How many seats are in the 12th row?
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