Earnings from Subscription Sales - Arithmetic Series

What type of sequence describes the payment for each additional newspaper subscription?

• 
  Geometric sequence

• Arithmetic sequence

• 
  Fibonacci sequence

• Harmonic progression

What is the common difference in the amount earned for each additional subscription?

• $0.05

• $0.10

• $0.15

• $0.20

Which formula represents the amount earned for the nth subscription?

This corresponds to the nth term of this arithmetic sequence.

• un = 2 + (n-1)0.10

• 
  un = 2 + n(0.10)

• 
  un = 0.10 + (n-1)2

• 
  un = 0.10n

How much money is earned for selling the 100th subscription? Use your GDC

• $10.00

• $11.90

• $12.00

• $12.90

What is the total amount of money earned by selling 100 subscriptions?

The formula is S100 = n x (u1 + u100) / 2

• 
  $725.00

• 
  $710.00

• $695.00

• $700.00

Did you enjoy using this video + quiz aid to recap Arithmetic Series following yesterday's/today's lesson? (Thursday/Friday September 11/12, 2025 @ MUWCI)