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3.10 Exercise 1

Avg difficulty 2.5

Determine if the following sequences are arithmetic sequences. Explain your reasoning.

  1. {4,7,10,13,16,19,22,25,...}\left\{4 , 7 , 10 , 13 , 16 , 19 , 22 , 25 , ...\right\}
  2. {20,40,80,160,320,640}\left\{20 , 40 , 80 , 160 , 320 , 640\right\}
  3. {7,1,−5,−11,−17,−23,−29,−34,−40}\left\{7 , 1 , - 5 , - 11 , - 17 , - 23 , - 29 , - 34 , - 40\right\}

OpenStax Contemporary Mathematics, 3.10 Arithmetic Sequences, exercise 1

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Adapted from Contemporary Mathematics © 2023 Rice University. Licensed under CC BY 4.0. Source: Contemporary Mathematics. Imported at revision fa7c1a1.